Product Guides
Beam Trolley & Girder Trolley Guide: Push vs Geared, Flange Width, Capacity & AS 1418 Compliance
Beam and girder trolleys: push vs geared vs motorised, flange width sizing rule, WLL selection, AS 1418 compliance and AU brand reality for workshop monorail systems.
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Lifting Hooks Guide: G80, G100 Eye, Clevis, Swivel & Self-Locking Hook Selection
Lifting hooks for Australian rigging: eye, clevis, swivel, foundry, grab and self-locking hooks. AS 3776, EN 1677, G80 vs G100 grade selection.
Read moreWire Rope Guide: Construction, Sizes & WLL
Wire rope explained: 7×7 / 7×19 / 1×19 construction, galvanised vs G316 stainless, AS 2076 grips, thimbles, ferrules, swaging and termination for Australian industry.
Read morePlate Clamp Guide: Vertical, Horizontal, Universal & MAGIC Selection Method
Plate clamps for lifting steel: vertical, horizontal and universal types, AS 4991, jaw selection, hardness limits and Australian brand guidance.
Read moreWebbing & Round Slings Guide: WLL Colour Codes, Hitches & AS 1353 Standards
If you lift loads in an Australian workshop, fabrication shop, or on a construction site, you'll reach for a sling almost every day. Three types do almost all the work: chain slings for heavy-duty production lifting, wire rope slings for high-temperature and abrasive environments, and synthetic slings — the webbing and round slings covered in this guide — for almost everything else. Synthetic slings are the most-used sling type in AU industry. They're light, flexible, gentle on painted and machined surfaces, and rated to AS 1353 (webbing) or AS 4497 (round) with an 8:1 safety factor. A 1-tonne webbing sling weighs about 350 grams; a 1-tonne chain sling weighs over 4 kilograms. The trade-off is abrasion sensitivity — a synthetic sling that's been dragged across a sharp edge or chemical-soaked is finished, where a chain sling would shrug it off. This guide covers webbing (flat) slings and round slings — the two synthetic-sling formats — for Australian industrial lifting. We'll cover construction, the AS 1353 + AS 4497 standards framework, the WLL colour-code chart, hitch types and deration, inspection and retirement criteria, and where each format wins. AIMS stocks the full range across Austlift, Beaver, Garrick Herbert, and Yoke — 100+ SKUs. Browse the rigging and lifting slings range or call (02) 9773 0122 for sizing help. For chain slings see our Chain Sling Guide; for wire rope slings see the Wire Rope, Slings & Rigging Guide. This article is the third in the slings triple — synthetic webbing and round slings, both governed by AS 1353 and AS 4497. What synthetic slings are — webbing vs round Synthetic slings are flexible textile lifting devices made from high-tenacity polyester yarn. Two formats dominate the AU market: Webbing (flat) slings are woven polyester webbing — flat, ribbon-like, with sewn loop eyes at each end (or sewn endless for the rarer endless variant). The webbing is usually constructed in 1, 2, or 4 plies of webbing layered together — a 4-ply sling at the same WLL is shorter and stiffer than a 1-ply sling, but more abrasion-resistant. Most operators recognise webbing slings as the "flat blue/green/yellow lifting straps" they see on workshop walls and at builders' yards. Round slings are continuous loops of polyester core fibres encased in a woven polyester jacket. The jacket protects the core from abrasion; the core takes the load. Round slings are even more flexible than webbing — they conform around odd-shaped loads, distribute load evenly across multiple pickup points, and are softer on painted or polished surfaces. Heavy-duty round slings (Beaver Jumbo and Mega ranges) are how 30-, 50- and even 100-tonne loads get lifted in modular construction and heavy industry. Both formats sit alongside chain slings and wire rope slings in the AU rigging toolbox. The slings triple — chain (covered in our Chain Sling Guide), wire rope (covered in our Wire Rope, Slings & Rigging Guide), and synthetic (this guide) — covers the vast majority of below-the-hook lifting. Synthetic slings own the day-to-day workshop and trade applications; chain wins on heavy production duty cycles; wire rope wins on heat and severe abrasion. Webbing (flat) slings — construction and anatomy A flat webbing sling is woven polyester webbing fabricated to AS 1353.1 specifications. The most common construction is 100% high-tenacity polyester yarn woven in standard widths (25mm, 50mm, 75mm, 100mm, 150mm, 200mm, 240mm, 300mm), folded back at each end to form a sewn loop eye, and layered into 1-ply, 2-ply, or 4-ply configurations to achieve the rated capacity. The key parts: Body — the main length of webbing that takes the load. Width and ply count combine to set the WLL. Eyes — sewn loops at each end. Standard folded eyes for general-purpose use; reinforced or "twisted" eyes for harder-wearing applications. Sewing — multi-stitch box patterns at the eye joins. The stitching is the weakest point on the sling — a healthy stitch pattern is the inspection focus. Tag — sewn-in label with WLL, manufacturer, AS 1353 reference, serial number, length and date of manufacture. The tag is the legal certificate; if it's illegible, the sling is out of service. Ply count matters: a 2-tonne 1-ply sling and a 2-tonne 2-ply sling have the same vertical WLL but different bend characteristics. The 2-ply is shorter for the same nominal length, less flexible, and harder-wearing. A 1-ply Beaver Flat Webbing Sling 1-Ply is the lighter, more flexible choice for clean workshop work; a 2-Ply or 4-Ply Beaver sling steps up for harder duty. The Garrick Flat Webbing Sling range is the AU mid-tier — 1-ply construction, full 1T to 10T+ capacity range, AS 1353 compliance, sewn-in tag with serial number. Browse the full webbing sling range for the size and capacity you need. Round slings — construction and anatomy A synthetic round sling looks like a continuous polyester loop — there are no visible eyes, no sewn ends. Inside the woven polyester outer jacket, a continuous core of polyester yarns runs in a single endless loop. The number of core yarns determines the capacity; the jacket is purely abrasion protection — it doesn't carry load. Construction is governed by AS 4497.1. Manufacturers wind a continuous polyester yarn around a fixed length to build up the core to the rated capacity, then enclose the core in a woven jacket sleeve. The jacket is colour-coded by capacity (we'll cover the chart below), and a sewn-in label provides the legal WLL, manufacturer, serial number, length, and AS 4497 reference. The key parts: Core — the polyester yarn loop that takes the load. Hidden inside the jacket. Jacket — the woven polyester sleeve. Colour-coded for WLL (1T violet, 2T green, 3T yellow, etc.). Provides abrasion protection. Tag — same data as a webbing sling tag. Sewn into the jacket. The big advantage: round slings cradle a load with a rounded, soft contact area. Webbing slings squeeze a load between two flat surfaces; round slings flow around the load. For odd-shaped or coated loads — castings, finished machinery, fragile fabrications, painted assemblies — the round sling is gentler and more secure. The trade-off is that the jacket can hide internal core damage; an abraded jacket is obvious, but shock-loading or chemical exposure can damage the core without leaving visible jacket marks. AIMS stocks the full Austlift range across all common WLLs: Austlift Round Sling 1-Tonne (Violet) — workhorse light-duty option, 0.5m to 8m lengths. Austlift Round Sling 2-Tonne (Green) — the most-used WLL in AU industrial work. Austlift Round Sling 3-Tonne (Yellow) — step-up for heavier loads. Austlift Durabone Round Sling 2-Tonne — heavy-duty jacket variant for high-abrasion environments. Garrick Round Sling 5-Tonne (Red) — mid-tier 5T option. Beaver Mega Round Sling 6-Tonne (Brown) — heavy-duty premium tier. Beaver Jumbo Round Sling 30-Tonne — for modular construction, transformers, and other heavy industrial lifts. Webbing vs round — when to use each Both work. Both are AS-compliant. Both come in the same WLL range. The decision usually comes down to load shape, surface sensitivity, and how harsh the environment is. Choose webbing (flat) when Choose round when Load has flat parallel surfaces (boxes, crates, bundles, beams) Load has curved, irregular, or rounded surfaces (castings, vessels, tanks) Visual abrasion inspection matters — webbing shows damage clearly Surface protection matters — finished/painted/polished surfaces You need a wide bearing area to spread load on soft material You need maximum flexibility for complex multi-leg setups Heavier-duty cycle work (4-ply construction is more abrasion-resistant) Frequent re-rigging — round slings stow into smaller bundles Lower price point at equivalent WLL — typical for trade and maintenance Choker and basket hitches that need to flex tightly around the load In real workshops, most operators have both. A 2T webbing sling and a 2T round sling cover 80% of day-to-day lifting between them. The forum consensus from r/Rigging and Practical Machinist machine-shop threads matches this: webbing for boxes and beams, round for castings and machinery. AS 1353 + AS 4497 — Australian standards explained Two Australian Standards govern synthetic slings: AS 1353.1-1997 Flat synthetic-webbing slings (Product specification). Sets the design, materials, construction, marking and testing requirements for webbing slings sold in Australia. AS 1353.2-1997 Flat synthetic-webbing slings (Care and use). Covers correct use, inspection, retirement criteria and operator responsibilities. AS 4497.1-1997 Round slings — synthetic fibre (Specification). Equivalent design and testing standard for round slings. AS 4497.2-1997 Round slings — synthetic fibre (Care and use). Equivalent care-and-use standard for round slings. Both standards mandate a safety factor of 8:1 — meaning the minimum breaking load (MBL) of the sling is at least 8 times the marked WLL. A 1-tonne sling has an MBL of at least 8 tonnes. This is much higher than the 4:1 or 5:1 typical for chain slings — the higher safety factor compensates for synthetic slings' greater sensitivity to damage and shock loading. Compliant slings supplied in Australia are individually serial-numbered, NATA-tested, and supplied with a test certificate. Look for the AS 1353 (webbing) or AS 4497 (round) reference printed on the sewn-in tag along with the manufacturer name, WLL, length, serial number, and date of manufacture. If any of those data points is missing or illegible, the sling is out of service until re-certified by a competent person. For the broader WLL/SWL/MBL framework — what each acronym means and how they relate — see our SWL meaning explainer. The colour-code chart — WLL by jacket colour One of the most-cited features of synthetic slings is the standardised colour code. Every round sling jacket and every webbing sling label uses the same colour-by-WLL scheme across AU and global markets, harmonised with EN 1492 (the European equivalent). At a glance, an experienced rigger reads the WLL off the colour without picking the sling up. Jacket colour WLL Common uses Violet 1 tonne Light-duty workshop, hand tools, small assemblies, test rigs Green 2 tonnes General workshop and trade work — the most-used WLL in AU industry Yellow 3 tonnes Maintenance lifts, mechanical assemblies, structural fabrications Grey 4 tonnes Heavier maintenance, light structural steel, machinery transport Red 5 tonnes Structural steel, large machinery, motors and gearboxes Brown 6 tonnes Pipe sections, vessels, heavy mechanical assemblies Blue 8 tonnes Modular construction, structural sections, transformers Orange 10 tonnes and above Heavy industrial — pre-cast panels, transformers, vessels, modular plant For higher capacities (12T, 15T, 20T, 30T+) the orange code continues, with the WLL printed on the tag. The Beaver Jumbo and Mega Round Sling ranges cover 6T to 50T+ in orange jackets, with the precise WLL on the tag. Critical: the colour is a starting point, not a substitute for reading the tag. Always confirm the WLL by reading the sewn-in tag before the lift. A jacket that's been replaced (it happens with re-jacketed slings on rare occasions) or a tag that's been bleached by UV may not match. The tag is the legal document; the colour is a fast cross-check. Hitch types — vertical, choker, basket The same sling rated to 2 tonnes can be safely loaded to anything from 1.6 tonnes to 4 tonnes depending on how you rig it. Understanding the three hitch types and their derating factors is the difference between a safe lift and an overload. Vertical hitch (1.0×). The sling hangs straight down from the hook with both eyes attached to a single load point or a shackle. WLL is the rated value. This is the baseline. Choker hitch (0.8×). The sling is wrapped around the load, then one eye is passed through the other, forming a self-tightening loop. The sling tightens on itself as the load is lifted. WLL drops to 80% of vertical because of the bend angle at the choke point. The forum consensus from r/Rigging and r/cranes is consistent: "if you choke, multiply by 0.8." Basket hitch (2.0×, parallel legs). The sling passes under or around the load, with both eyes attached up at the hook. The load hangs in a U or "basket" formed by the sling. With both legs vertical (parallel), capacity doubles to 200% — both legs share the load. As the basket angles spread (the legs come apart at the top), capacity derates by the sling-angle factor — the same maths as a 2-leg sling. Hitch WLL multiplier Notes Vertical (single line) 1.0× Baseline. Both eyes attached to a single point or shackle. Choker 0.80× Self-tightening loop around the load. Sharp bend at the choke reduces WLL. Basket — parallel legs (both vertical) 2.0× Both legs share load equally. Maximum capacity for a single sling. Basket — 60° from horizontal 1.732× 2 × sin(60°) = 1.732. Standard rigging angle. Basket — 45° from horizontal 1.414× 2 × sin(45°) = 1.414. Wide spread — confirm sling length is sufficient. Basket — 30° from horizontal 1.0× 2 × sin(30°) = 1.0. Same as a single vertical line — and not recommended. The rule riggers live by: 60° from horizontal is the practical minimum. Below 60° (more horizontal sling angle), capacity loss is severe and side loads on attachment points climb fast. Below 45° you've lost more than 30% of capacity and you're applying significant inward force on the lifting points. Below 30° you've thrown away half the capacity and the geometry is dangerous. For more on sling angle deration and the 60° rule, see our Chain Sling Guide sling-angle section — the maths is identical for chain, wire rope and synthetic slings. Reading the sling tag — what it tells you Every compliant sling has a sewn-in tag. The tag contains the legally-required information for use: WLL in vertical, choker and basket configurations — three numbers on a single tag. Vertical is the baseline; choker is 0.80× the vertical; basket is 2.0× the vertical (parallel legs). Manufacturer name and country of origin. AS 1353 (webbing) or AS 4497 (round) reference. Serial number. Ties the sling to its individual test certificate. Length. Usually printed in metres. Date of manufacture. Used to track service life — 10 years is the typical hard limit, less in harsh environments. Material code. "PES" = polyester (the AU industrial standard). "PA" = polyamide (nylon). "PP" = polypropylene (rare, lower temperature limit). If any of those data points is missing or illegible, the sling is out of service until re-certified. Bleached, faded, ripped, or covered tags are common failure modes — UV exposure, paint over-spray, abrasion, and chemical contact all kill tags. Replacement tags are available from manufacturers but must be authorised — a sling without traceability cannot be used safely on a regulated site. Pre-use inspection — the hand-feel rule The inspection rule for synthetic slings is different from chain or wire rope: visual inspection alone is not enough. The forum consensus from professional riggers is consistent — you must hand-feel the entire length of the sling for each pre-use check. Run the sling through your gloved hands, feeling for: Cuts in the webbing or jacket. Any cut that severs even a single fibre means retire — the load-bearing yarns may be damaged below. Abrasion that's reduced webbing thickness. Significant fluffing, fuzz or fibre loss = retire. Heat damage. Brittle, hard, glossy patches indicate heat exposure (welding splatter, hot work nearby). Polyester degrades from about 100°C; melted polyester is brittle and weak. Chemical attack. Stiff, discoloured, or chalky patches indicate acid, alkali, or solvent exposure. UV damage. Sun-bleached, faded, brittle webbing = the polyester chains have broken down. Common on slings stored on outdoor racks. Stitch damage. Broken, missing, or pulled stitches at the eye joins. Stitch failure is the most common catastrophic failure mode. Knots or kinks. A kinked synthetic sling is permanently damaged. Knots reduce capacity to ~50% and damage the fibres. Internal core damage on round slings. If the jacket is intact but you can feel a discontinuity, lump, or thinning in the core through the jacket, retire the sling. Inspection level Frequency By whom Pre-use visual + hand-feel Every lift Operator (dogger or competent person) Periodic thorough inspection Every 3 months (light duty) to every month (heavy duty) Competent person, recorded Annual NATA proof-test Annually (most regulated sites) or per the company lifting register NATA-accredited test facility Retirement criteria — when to scrap a sling Synthetic slings retire on damage, not on age alone (though most manufacturers specify a 10-year hard maximum from date of manufacture, even on slings that look unused). The conditions that mandate immediate retirement: Any cut through the webbing or jacket exposing core fibres. Significant abrasion with visible fibre loss. Heat or chemical damage — brittle, hard, discoloured, or chalky patches. UV degradation — fading and brittleness. Knots or kinks — permanent fibre damage even after the kink is straightened. Broken or missing stitches at the eyes. Tag illegibility — no traceable WLL or serial number. Shock load — any sling that's been shock-loaded (sudden drop, snatch lift, severe arrest) must be inspected by a competent person before further use; the hidden core damage cannot be ruled out by visual inspection alone. Overload — any sling loaded above its WLL is condemned. The UK LOLER inspector rule applies as a principle: a sling that's been at twice its rated load is finished. Manufacturer's stated service-life limit reached (typically 10 years from manufacture). Cut a retired sling in half so it can't be returned to service by mistake, and remove the tag. This is standard AU rigging practice and is required under several site-specific lifting registers. Edge protection — sleeves, corner protectors, burlap Synthetic slings die fast at sharp edges. Steel plate edges, casting fettle marks, machined corners, even rough timber edges can cut a sling in a single lift. Edge protection is the standard mitigation. Three options: Slip-on protector sleeves. Heavy-duty leather, Cordura, or polyurethane sleeves that slide over the sling at the contact point. Reusable, fast to fit, cover the full circumference. Corner protectors. Rigid plastic or steel V-blocks that sit between the sling and the load corner. Better for sharp 90° angles where a sleeve would still be cut at the apex. Disposable wraps — burlap, hessian, cardboard, even old timber offcuts. Common on field jobs where dedicated protectors aren't to hand. Forum-validated insight (r/Rigging): The reason riggers wrap burlap or hessian under a sling at a contact point isn't softening — it's increasing the bend radius. Polyester slings have a manufacturer-specified minimum bend radius for full WLL. A sharp edge with no protection forces the bend below the minimum and damages the fibres immediately. Burlap or a similar wrap distributes the bend across a larger radius and keeps the sling within spec. Most riggers don't articulate this; the experienced ones do. Sling connectors — terminal fittings and hooks Synthetic slings often need a hook, master link, or connector at the eye end. AIMS stocks two common Yoke products plus the Austlift G80 connector: Yoke G100 Webbing Sling Connector 8mm — Grade 100 alloy steel connector designed to attach a chain hook or master link to a webbing sling eye without damaging the webbing. Yoke G80 Round Sling Connector — designed for the rounded geometry of a round sling, prevents jacket abrasion at the connector. Austlift G80 Type WL Webbing Sling Connector — Grade 80 alloy steel, specifically shaped for webbing sling eye geometry. The wrong connector kills slings. A sharp-edged shackle pin pulled directly through a webbing sling eye creates a stress concentration and can cut the webbing under load. A purpose-designed sling connector spreads the load across a wider, smoother contact area. For shackles attached directly to sling eyes, see our Bow Shackle and D-Shackle Guide — the pin-orientation rules apply equally to chain, wire and synthetic slings. 1-ply, 2-ply, and 4-ply webbing — what the difference means Webbing slings are constructed in single, double, or quadruple plies of webbing layered together at sewn eyes. Same webbing material, same polyester, same AS 1353 — but different stack-up. Construction Characteristics Best for 1-ply (single layer) Lightest, most flexible, longest at given WLL, easiest to inspect — abrasion shows immediately on the single layer Workshop and trade work, clean environments, frequent re-rigging, Beaver 1-Ply 2-ply (double layer) Mid-weight, mid-flexibility, more abrasion resistance than 1-ply at same WLL, shorter overall length General industrial duty, mixed-environment work, Beaver 2-Ply 4-ply (quadruple layer) Heaviest, stiffest, shortest at given WLL, most abrasion-resistant — significantly more durable in harsh environments Heavy industrial, high-cycle hire fleet, abrasive environments, Beaver 4-Ply For the same WLL, a 4-ply sling has roughly 4× the cross-section of a 1-ply sling — making it shorter, stiffer, and tougher on the wear faces. For a workshop wanting the lightest, most flexible 1-tonne sling, the 1-ply is the choice. For a hire fleet or a high-abrasion environment, the 4-ply pays for itself in service life. AIMS synthetic sling range AIMS stocks 100+ webbing and round sling SKUs across the four AU brands most riggers trust: Austlift — AS 1353 / AS 4497 compliant, 100% polyester yarn, individual test certificates, full 1T to 30T+ range. AIMS stocks the entire core Austlift round sling series (1T, 2T, 3T, 4T, 5T at standard lengths 0.5m to 8m) plus the heavy-duty Austlift Durabone Round Sling for high-abrasion work and the G80 Type WL Webbing Sling Connector. Beaver — premium AU rigging brand. 1-Ply, 2-Ply and 4-Ply flat webbing slings, the Flat Endless Sling for choker and basket work without eye joins, plus the Mega Round Sling (6T to 8T) and Jumbo Round Sling (30T to 50T+) for heavy industrial lifts. Garrick Herbert — AU manufacturer with the Garrick Flat Webbing Sling (1T to 10T+, AS 1353, 8:1 safety factor) and the Garrick Round Sling 5-tonne (Red). Yoke — Grade 80 and Grade 100 connectors. The G100 Webbing Sling Connector and the G80 Round Sling Connector are the trusted hardware for connecting slings to chain hooks, master links and shackle assemblies. Browse the full rigging and lifting slings range — 66+ products covering chain slings, webbing slings, round slings, wire rope slings and accessories. Need help sizing? Call us on (02) 9773 0122 or contact our team. Specialty slings — drum, pipe, jumbo Beyond the standard webbing and round-sling ranges, several specialty types fill specific applications: Drum slings — purpose-shaped slings for lifting 200L drums vertically. Cradle the drum body without crushing the chime. CPC $110 on "drum lifting sling" — these are real-world specialty products. Pipe slings — wider webbing or larger-diameter round slings rated for cylindrical loads with even load distribution. Endless slings — round slings or sewn-endless webbing slings (no eye joins). The Beaver Flat Endless Sling is the AU example. Useful for choker and basket hitches where eye joins would interfere. Jumbo round slings — heavy-duty industrial round slings rated 30T, 50T, 100T+. Used in modular construction, transformer lifts, vessel placement, and pre-cast panel handling. The Beaver Jumbo Round Sling series covers this end of the market. Anti-static slings — for environments where electrostatic discharge is a hazard. Specialised order, typically polypropylene rather than standard polyester. For specialty configurations not in the standard catalogue, contact us — most can be sourced or fabricated to AS 1353 / AS 4497 specifications with NATA test certification. Common mistakes From hundreds of forum threads and AU rigging incident reports, the same handful of mistakes show up repeatedly. Every one of them is preventable. Mistake Why it fails Fix Knotting a too-long sling to shorten it Knots reduce sling capacity to ~50% and damage fibres permanently. The kink point becomes the failure point. Use a shorter sling, doubled-up sling, or a chain shortening clutch. Using a sling around a sharp edge with no protection Bend radius drops below manufacturer spec; fibres cut under load. Slip-on sleeve, corner protector, or wrap (burlap, hessian, cardboard). Choker hitch loaded at vertical WLL (forgotten 0.8× derate) Effective WLL is 80% of vertical. Loading to 100% is a 25% overload. Read the tag — vertical, choker and basket WLLs are all printed. Basket hitch with sling angle below 60° (legs too horizontal) Severe WLL deration plus inward side-load on attachment points. Use a longer sling, two slings, or a spreader/lifting beam. Soft-on-soft rigging (synthetic against synthetic) Mutual abrasion at the contact point under load. Both slings damaged in one lift. Insert a master link, hook or shackle between the two synthetic slings. Sharp-edged shackle pin through webbing sling eye Stress concentration at the pin contact area. Webbing cuts under load. Use a sling connector (Yoke G100, Austlift G80) sized for the sling format. Returning a shock-loaded sling to service Internal core damage on round slings cannot be ruled out by visual inspection. Out of service until a competent person inspects, or scrap. Storing slings on outdoor racks in direct sunlight UV breaks down polyester chains. Sling becomes brittle with reduced WLL. Store indoors, on hooks or hangers, away from direct sunlight, chemicals and damp. Selection checklist + how to order A practical pre-order checklist: Know the load weight — and the WLL needed at the hitch type you'll use (vertical / choker / basket). Choose webbing or round — flat surface vs irregular load, abrasion environment vs surface protection. Pick the WLL by colour — violet 1T, green 2T, yellow 3T, grey 4T, red 5T, brown 6T, blue 8T, orange 10T+. Pick the length — long enough for the hitch geometry without forcing knots or overly horizontal angles. Standard lengths 0.5m, 1m, 1.5m, 2m, 3m, 4m, 6m, 8m. Pick the ply count (webbing only) — 1-ply for clean, 2-ply for general industrial, 4-ply for heavy duty / abrasive. Confirm AS 1353 (webbing) or AS 4497 (round) — every AIMS-supplied sling is compliant and individually serial-numbered. Plan edge protection — sleeves, corner protectors or wraps if there are sharp edges in the load path. Check operator licensing — dogging or rigging licence as required by the WHS framework. Slinging loads is dogging activity under CPCCLDG3001. For multi-leg sling assemblies, see our Chain Sling Guide — the multi-leg geometry rules apply equally to synthetic configurations. For complete rigging context including shackles and connection hardware, see our Wire Rope, Slings & Rigging Guide and Bow Shackle Guide. For overhead lifting points, see our Beam Clamp Guide. Frequently Asked Questions What is a webbing sling used for? A webbing sling is a flexible polyester lifting strap used to attach a load to a chain block, electric hoist, crane hook, or other lifting device. Common uses include lifting machinery for transport, suspending loads from beam clamps for maintenance work, supporting fabricated assemblies during welding, and general workshop and trade lifting where a chain sling would be too heavy or damage the load surface. What is the difference between a round sling and a webbing sling? A webbing sling is flat, ribbon-like polyester webbing with sewn loop eyes at each end. A round sling is a continuous polyester core inside a woven jacket — no visible eyes, just an endless loop. Webbing slings have visible damage modes (abrasion, cuts, broken stitches show clearly); round slings hide internal damage under the jacket and are gentler on finished surfaces. Both are AS-compliant with an 8:1 safety factor. What is the safety factor of synthetic slings in Australia? AS 1353 (webbing) and AS 4497 (round) both mandate an 8:1 safety factor — the minimum breaking load (MBL) of the sling is at least 8 times the marked Working Load Limit (WLL). A 1-tonne sling has an MBL of at least 8 tonnes. The 8:1 factor is higher than the 4:1 typical for chain slings, reflecting synthetic slings' greater sensitivity to damage. What does AS 1353 cover? AS 1353 covers flat synthetic-webbing slings in two parts: AS 1353.1-1997 is the product specification (design, materials, construction, marking, testing); AS 1353.2-1997 is care and use (correct use, inspection, retirement criteria, operator responsibilities). Compliant webbing slings sold in Australia are individually serial-numbered with a sewn-in tag carrying the AS 1353 reference, manufacturer name, WLL, length and date of manufacture. What does AS 4497 cover? AS 4497 covers synthetic round slings in two parts: AS 4497.1-1997 is the product specification; AS 4497.2-1997 is care and use. AS 4497 is the round-sling equivalent of AS 1353 — same 8:1 safety factor, same colour-code system, same care and inspection framework. The two standards are usually treated together in AU rigging documentation. What is the colour code for lifting slings in Australia? The AU/NZ colour code matches the global EN 1492 system: 1-tonne violet, 2-tonne green, 3-tonne yellow, 4-tonne grey, 5-tonne red, 6-tonne brown, 8-tonne blue, 10-tonne and above orange. The colour identifies the WLL at a glance, but the legal WLL is on the sewn-in tag and must always be read before the lift. Bleached or replaced jackets can mismatch the original WLL. What is a 2-tonne sling colour? Green. Across both webbing slings and round slings in Australia, a 2-tonne WLL is marked with green webbing or a green jacket. This is the most-used WLL in AU industrial work and the colour most operators recognise immediately. How does the choker hitch reduce sling capacity? A choker hitch wraps the sling around the load and passes one eye through the other to form a self-tightening loop. The sling bends sharply at the choke point, creating a stress concentration that reduces effective WLL to 80% of the vertical rating (multiply vertical WLL by 0.80). The 0.8× factor is a long-standing rigging industry standard and applies equally to chain, wire rope and synthetic slings. How does the basket hitch increase sling capacity? A basket hitch passes the sling under or around the load with both eyes attached up at the lifting point. With both legs vertical (parallel), the load is shared equally between two lines, doubling effective capacity to 200% of vertical (2.0×). As the basket angles spread (legs come apart at the top), capacity derates by the sling-angle factor. At 60° from horizontal the multiplier is 1.732×; at 45° it's 1.414×; at 30° it's back to 1.0× and the geometry is unsafe. What sling angle puts the least stress on the slings? The closer to vertical, the lower the stress per leg. A two-leg sling at 90° from horizontal (straight vertical legs) puts only the load weight per leg through each sling. At 60° from horizontal, leg load increases to 58% of total per leg. At 45° it's 71% per leg. At 30° it's 100% per leg — each sling is carrying the full load weight even though the lift is shared between two. The AU rigging rule of thumb: 60° from horizontal is the practical minimum. How often should I inspect a webbing or round sling? Pre-use visual and hand-feel inspection before every lift, by the operator. Periodic thorough inspection every month to three months by a competent person, recorded in a lifting register. Annual NATA proof-test by an accredited test facility, or per the company's lifting-equipment register requirements. Most regulated AU sites require quarterly thorough inspection on hire-fleet equipment. When should I retire a synthetic sling? Immediately, on any of these: any cut through the webbing or jacket; significant abrasion with fibre loss; heat or chemical damage (brittle, hard, discoloured patches); UV degradation (faded, brittle); knots or kinks; broken or missing stitches; illegible tag; shock-loaded; overloaded above WLL; or the manufacturer's stated service-life limit (typically 10 years from manufacture). Cut a retired sling in half so it can't be returned to service. Can I keep using a sling with a small cut? No. Any cut through the webbing or jacket exposing the load-bearing fibres mandates immediate retirement. Synthetic slings rely on every fibre being intact to develop their rated capacity. A small cut becomes a large failure under load — the cut is the propagation point. The forum consensus from AU and international rigging communities is unanimous on this. What's the difference between 1-ply, 2-ply and 4-ply webbing slings? The number of layers of webbing stacked at the eye joins. Same polyester material, same AS 1353 compliance, same WLL at given dimensions — but a 1-ply is the lightest and most flexible, a 2-ply is mid-weight and mid-flex, and a 4-ply is the heaviest, stiffest and most abrasion-resistant. Same WLL at higher ply count means a shorter, stiffer, more durable sling. 1-ply for clean workshop work, 2-ply for general industrial, 4-ply for heavy-duty or hire fleet. Are round slings stronger than webbing slings? At equivalent WLL, no — both meet the same 8:1 safety factor. Round slings are typically lighter and more flexible at the same WLL because the polyester core is concentrated rather than spread across a flat webbing. Round slings handle higher capacities at smaller cross-sections — the Beaver Jumbo Round Sling reaches 30T+ in a package that's still hand-handleable. For straight comparison at common WLLs (1T to 10T), the choice between webbing and round is about load shape and surface sensitivity, not strength. Need to identify a thread standard? Our Thread Standards Guide covers BSP, NPT, UNC, UNF, BSW and metric with identification tips. AIMS Industrial stocks lifting chain links — see the full range for trade and industrial use. Share: Share on Facebook Share on X Pin on Pinterest Previous Post Beam Clamp Guide: Girder Clamps, Trolleys & How to Choose for Australian Lifting Next Post Plate Clamp Guide: Vertical, Horizontal & Universal Lifting Clamps for Australian Industry People Also Ask — Webbing & Round Slings Q: What is the difference between a webbing sling and a round sling? A webbing sling is a flat strap typically made from polyester or nylon woven in a flat band, with eyes at each end. It is strong, lightweight and distributes load over a wider contact area than wire rope. A round sling (also called an endless sling or soft sling) is made from continuous polyester yarn loops enclosed in a protective woven sleeve, giving it a round cross-section. Round slings generally have higher load capacity for their weight, are more flexible and easier to store, and conform well to irregular load shapes. Both are used for general rigging and lifting where the load surface must be protected. Q: How does the hitching configuration affect a sling's working load limit? The same sling has different working load limits depending on how it is rigged. A straight pull (vertical hitch) uses the sling's full rated capacity. A choker hitch, where the sling wraps around the load and passes through its own eye, reduces capacity to typically 80% of the vertical rating due to the angular loading at the choke point. A basket hitch, where the sling forms a U under the load with both eyes attached to the hook, increases effective capacity because two legs share the load — but only if the load is balanced and the legs are vertical. As leg angles increase, the load on each leg increases and the effective capacity decreases. Q: What inspections should I perform on a webbing sling before use? Inspect the full length of the sling for cuts, abrasions, tears, chemical damage, heat damage and UV degradation. On webbing slings, look for fraying or broken yarns across the width, end fitting damage, and any stitching failure in the eye sections. A sling with cuts across more than 10% of the width, or any broken structural yarns, must be removed from service. On round slings, inspect the outer sleeve for damage and look for yellow inner core fibres visible through the sleeve, which indicate the structural yarns inside are exposed. If in doubt, remove the sling from service. Q: Can synthetic slings be used with chemicals? Synthetic slings must not be used with chemicals that attack the fibre material. Polyester webbing and round slings resist many acids and bleaching agents but are attacked by strong alkalis. Nylon slings resist alkalis but are attacked by acids. Neither material should be used where prolonged exposure to fuel, oils or organic solvents is likely, as these can degrade the fibres. The sling manufacturer's chemical resistance guide should be consulted before use in any chemical environment. Contaminated slings that cannot be identified should be destroyed and replaced. Q: What colour codes are used for webbing sling load ratings? Webbing slings use a standardised colour coding system to identify their working load limit (WLL) rating: violet = 1 tonne, green = 2 tonnes, yellow = 3 tonnes, grey = 4 tonnes, red = 5 tonnes, brown = 6 tonnes, blue = 8 tonnes, and orange = 10 tonnes. Slings above 10 tonnes are typically individually tagged. These colour codes apply to the sling body; always confirm the WLL from the attached load tag as the definitive rating, particularly for older slings where colour identification may be affected by soiling. 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Read moreBeam Clamp Guide: WLL Ratings & Steel Beam Sizes
A beam clamp turns an overhead steel beam into a temporary lifting point. Hook one onto an I-beam flange, attach a chain block to the shackle, and you have a 1-tonne to 10-tonne pickup point exactly where you need it — no welding, no drilling, no permanent fixtures. For maintenance fitters, mechanical workshops, riggers and dogmen across Australian industry, the beam clamp is one of the most cost-effective pieces of lifting kit in the toolbox. It's also one of the most misunderstood. The same word — "beam clamp" — is used for at least three different products: lifting beam clamps rated to AS 4991, hanging or suspension clamps for fixed services, and electrical conduit-support clamps that look similar but are not rated for any moving load. Pick the wrong one and you have a workplace incident waiting to happen. This guide covers beam clamps and girder clamps for lifting only — the lifting-rated devices stamped to AS 4991:2004, used with chain blocks, lever blocks, electric hoists and rigging assemblies on building sites, fabrication shops and maintenance workshops. We'll cover the fixed-jaw and universal screw-cam types AIMS stocks (Austlift, Beaver YC, Challenger and Garrick), how to size them for your beam, the side-loading rule that catches people out, beam trolleys, the dogger and rigger licensing context, and where beam clamps fail. Browse our beam clamp range or call (02) 9773 0122 if you need help selecting. What a beam clamp is — and what it isn't A lifting beam clamp grips the lower flange of a structural steel beam and provides a load-rated lifting eye, typically a shackle or D-ring, hanging below. The clamp transfers the load from the chain block, lever block or electric hoist into the beam, and the beam transfers it into the structure. It's a temporary fixture: clamp on, do the lift, unclamp, move on. It's not the same product as the orange threaded-rod beam clamp at the electrical supply house, or the cheap stamped-steel hanger clamp used to suspend conduit, water pipe or HVAC ducts. Those clamps are rated for static dead-loads — the weight of the service hanging from them — and not for the dynamic loads of a moving lift. A common Reddit thread shows an electrician using a threaded-rod beam clamp to suspend a hanging fixture; the consensus is blunt: that clamp is not rated for lifting use, even though it grips the same flange. The simple test: a lifting-rated beam clamp will be stamped with a Working Load Limit (WLL) in tonnes or kilograms, the standard it complies with (AS 4991 in Australia), the manufacturer name, a serial number, and the beam-flange thickness or width range it's certified for. If the only marking on a clamp is a thread size like "M12" or a generic max-load figure, it's a hanger clamp and should never go anywhere near a chain block. Warning — never improvise a lifting point. A pallet-puller, a piece of all-thread, an angle-iron offcut welded to the flange, or an unmarked clamp from the back of the shed is not a beam clamp. If the device is not stamped with a WLL and an Australian Standards reference, it does not get used to lift a load — full stop. Improvised or undocumented lifting attachments are one of the most common findings in NSW Resources falling-object reports. Beam clamp vs girder clamp — terminology "Beam clamp" and "girder clamp" describe the same product. The NSW Government dogging glossary uses "girder clamp" as the formal term, defining it as "an appliance designed to be fixed to the lower flange of a beam." Australian suppliers — Austlift, Beaver, Challenger, Garrick Herbert, Bullivants, Ranger Lifting — use the terms interchangeably across their catalogues. Search volume on Google AU is roughly three times higher for "beam clamp" than for "girder clamp," which is why this article leads with the more common term. What does matter is the distinction between a lifting beam clamp and a hanging or suspension beam clamp. A lifting clamp is rated for moving loads under a chain block or hoist — it has a shackle or fixed lifting eye, complies with AS 4991, and will be stamped with a WLL in lifting service. A hanging clamp is rated for static suspension only — fixed services, lighting bars, ductwork, conduit. Ratings on hanging clamps are a fraction of the equivalent lifting capacity, and the design assumes the load is centred and unmoving. Riley makes a Super Clamp model that bridges both applications, but it's the exception. Most clamps do one job, and using a hanging clamp under a chain block is a clear breach of the manufacturer's instructions. The four main types of beam clamp Lifting beam clamps come in four main configurations. Picking the right one is the first decision. Type How it works Best for AIMS example Universal screw-cam (adjustable) A screw thread plus a cam jaw. Tighten the screw to draw the cam against the flange. Wide adjustment range across many flange widths. Workshops with mixed beam sizes, hire fleets, general maintenance work. The most common type in AU industry. Austlift GC01, Beaver YC Fixed jaw with shackle Fixed jaw geometry sized to a specific flange range. Pre-fitted shackle for sling attachment. Faster on/off than screw type. High-cycle work where every lift uses the same beam. Faster to fit and remove than screw type. Challenger Beam trolley + girder clamp combo Wheels run on the lower flange. Hoist hangs from the trolley. The load travels along the beam. Workshop bays, machine shop pickup areas, anywhere the load needs to traverse the length of a beam. Beaver YC trolley clamp, Austlift trolley Suspension / hanging clamp Designed for static suspension. Lower WLL than lifting equivalents. Often no shackle — direct chain or wire attachment. Permanently or semi-permanently suspended services — lighting bars, conduit runs, mechanical services. NOT lifting. Specialist supply only — not stocked at AIMS for general lifting. For most general workshop and maintenance work the universal screw-cam type is the right choice. The 1-tonne Austlift GC01 at around $60 covers 75–220mm flanges and is rated to AS 4991 — most workshops have one in the lifting cabinet. Step up to the Beaver YC industrial range when you need a wider 90–320mm flange range, higher capacity (up to 10t), or premium-tier traceability. All beam clamps stocked at AIMS are AS/NZS load-rated with serial numbers and individual test certificates. The workhorse — Austlift GC01 deep-dive The Austlift Girder Clamp Model GC01 is the most common universal screw-cam clamp in Australian workshops. It's available across five WLL ratings — 1, 2, 3, 5 and 10 tonne — and covers a flange range of 75–220mm on the 1-tonne and progressively larger ranges on the higher-capacity sizes. Construction is alloy steel rated for use on flange materials up to 37 HRC hardness, individually serial-numbered with test certificates and a user manual supplied per unit. AS/NZS load-rated. The Austlift GC01 user manual states the device is "for vertical lift only" — meaning the load line must hang plumb beneath the clamp's lifting eye. This is the rule that catches people out. We'll cover the side-load problem and what it means for sling angles in the WLL section below. Austlift also supplies the Girder Clamp Black in 2-tonne capacity at around $76 — same operating principle, alternative finish. Either model is fit for general workshop and maintenance work where flange ranges sit in the typical AU structural steel sections (75–220mm covers most universal beam (UB) and universal column (UC) flanges in AS/NZS 3679.1 hot-rolled stock). Premium tier — Beaver YC industrial range The Beaver YC Industrial Girder Clamp is the premium-tier option AIMS stocks. WLL ratings span 1 to 10 tonne with a wider 90–320mm flange range than the equivalent Austlift unit, drop-forged alloy steel construction, AS 4991 compliance, and individual test certificates. The Beaver YC sits at a higher price point ($657 for the 1t at the time of writing) but it's the choice when: You're working on heavier structural sections — 250UB, 310UB, 360UB, 410UB and larger — where the standard 220mm Austlift jaw won't open wide enough. You need premium traceability for client documentation, compliance audits or principal-contractor tickets. You're running a hire fleet where build quality and inspection life matter against per-unit replacement cost. Beaver also supplies the YC Trolley & Girder Clamp combo — a 2000kg WLL trolley clamp with 72–200mm flange range that runs along the beam on rollers. Use the trolley combo where the load needs to traverse, not just lift in a single spot. Mid-budget — Challenger and Garrick Between the Austlift and Beaver tiers, AIMS stocks two mid-budget options. The Challenger Girder Beam Clamp covers the 1000–10,000kg WLL range at around $202 — solid working capacity, AS-compliant, suited to general workshop and trade applications where you want better than entry-level without paying the Beaver premium. Garrick Girder Clamp 10T at around $279 is purpose-built for the 10-tonne heavy-duty bracket — when capacity is the deciding spec, Garrick competes well against the equivalent Beaver YC 10t. For occasional workshop use, the Austlift GC01 is hard to beat on price-to-capability. For frequent lifting on a hire fleet or principal-contractor sites, the Beaver YC is the safe choice. Challenger and Garrick fill the middle. View the full beam clamp range to compare specs side by side. Beam range and flange thickness — sizing without shims Every beam clamp is rated for a specific flange-width range and a specific flange-thickness range. Get either wrong and the clamp either won't seat properly or will sit at the limit of its design envelope, where the safety margin disappears. The flange-width range is the dimension across the bottom of the I-beam — typically 75mm to 320mm in AIMS-stocked clamps, covering most structural sections in AS/NZS 3679.1. Australian universal beams (UB) and universal columns (UC) span 100mm to 410mm flange widths, so a single clamp won't fit every beam in a typical workshop. Mismatched sizing is a real-world problem: as one MEP engineer noted on Reddit, "even if you order the right size half the time the supply house sends you the wrong one." The mistake is to use a washer or steel plate as a shim to make a too-large clamp fit. That changes the load path, can twist the jaw, and is not approved by any manufacturer. AU section Flange width Suitable AIMS clamp 100UB / 100UC / 150UB 100–155mm Austlift GC01 1–3t (75–220mm) 200UB / 200UC / 250UB 133–204mm Austlift GC01 or Beaver YC 1–3t 310UB / 310UC 165–305mm Beaver YC 5t (90–320mm) 360UB / 410UB 170–235mm Beaver YC 5–10t If you're not sure of the flange dimensions, measure with a ruler or vernier caliper before you order. Drawing nominations like "200UB" don't tell you the actual flange width — a 200UB18.2 has a 99mm flange while a 200UB29.8 has a 134mm flange. Measure first. WLL, side-load deration and the sling-angle problem Every beam clamp is rated for vertical loading only unless the manufacturer explicitly states otherwise. The Austlift GC01 user manual is unambiguous: "Can only be used on vertical lift." Beaver, Challenger and Garrick clamps in the AIMS range are the same — the WLL stamped on the clamp applies when the load line hangs plumb beneath the lifting eye. Pull the load off-vertical and you're operating outside the rating. The two-leg sling trap. The single most common dangerous misuse of a beam clamp in Australian workshops is using one clamp as the suspension point for a two-leg or four-leg sling assembly. Each sling leg pulls at an angle to vertical. Those off-vertical components apply a side load to the clamp jaw — the clamp wasn't designed for it, the WLL drops dramatically, and the failure mode is the clamp slipping or rotating off the flange under load. The correct solution is a lifting beam (spreader bar) hung below the clamp, with the slings attached to the beam, not the clamp. A few specialist clamps — Tiger BCU and similar — are rated for loading at angles up to 90 degrees from vertical without deration. These are the exceptions. Unless your clamp's data plate explicitly says it can be loaded off-vertical, treat it as vertical-only. If a load can't be slung vertically beneath a single beam clamp, the standard AU rigging solution is a lifting beam (spreader bar) hung from the clamp via a single vertical chain or wire-rope sling. The lifting beam has multiple pickup points along its length, and the slings to the load attach to the beam. The clamp now sees a single vertical line — exactly what it's rated for. We cover spreader-beam selection in the lifting beam section below. Australian standards: AS 4991 + AS 1418.2 Two Australian Standards govern beam clamps and beam trolleys: AS 4991:2004 Lifting devices. The primary compliance standard for beam clamps used in lifting service. Covers design, manufacture, testing, marking and inspection of below-the-hook lifting devices including girder clamps, plate clamps and lifting magnets. Every lifting beam clamp sold in Australia for site or workshop use should carry an AS 4991 stamp. AS 1418.2 Cranes — Serial-hoists and beam trolleys. Covers chain blocks, lever blocks, electric hoists and the beam trolleys they run on. The trolley element of a girder-clamp-trolley combo is built to AS 1418.2, while the clamp portion is built to AS 4991. European-only EN 13155 stamping is not equivalent to AS 4991. AU principal-contractor sites typically reject lifting equipment that carries only an EN 13155 mark — the requirement is AS 4991 compliance backed by a current test certificate. Every clamp AIMS sells is supplied with an individual test certificate and a unique serial number. Keep the certificate with the equipment register; the serial number ties the certificate to the physical clamp during inspection. Beam trolleys — push, geared and motorised A beam trolley turns a fixed pickup point into a moving one. The trolley wheels run on the lower flange of the beam, the hoist hangs beneath, and the load travels along the length of the beam — useful in workshops where you need to lift a load off a truck and traverse it across to a workstation, or in fabrication bays where you need to move an assembly along a production line. Three types are common: Push (manual) trolleys — you push the load along the beam by hand. Suitable for lighter loads (typically up to 5t) and short traverses. The Challenger Push Beam Trolley at 500–5000kg covers most workshop applications. Cheapest option, fastest install, no maintenance beyond keeping the wheels clean. Geared trolleys — a hand chain drives the wheels through a gear set. Better control on heavier loads, easier on the operator over longer traverses. Step up from push trolley when load weight or distance justifies it. Electric trolleys — motor-driven, controlled from a pendant. Production-line applications, long traverses, high cycle rates. The Austlift Adjustable Beam Trolley in aluminium alloy and stainless steel is a height-safety-rated trolley running at 23kN — a different product class from a lifting trolley but worth knowing exists for the right application. The Beaver YC Trolley & Girder Clamp combo integrates the clamp and trolley into a single unit that can be used static (clamped to one spot) or rolling along the beam. Pair the trolley with a chain block, lever block or electric hoist sized for the load. The trolley capacity must equal or exceed the chain block capacity — a 2-tonne trolley with a 3-tonne chain block is not a 3-tonne system, it's a 2-tonne system. Lifting beam vs spreader beam vs beam clamp — the three "beams" People searching for "beam clamp" sometimes mean "lifting beam," and the two are different products. Here's the distinction: Beam clamp / girder clamp — clamps onto a structural beam to provide a lifting point. The structural beam is part of the building. The beam clamp is the temporary attachment. Lifting beam — a rated steel beam below the hoist hook, used to spread a load across multiple pickup points. The lifting beam is part of the rigging assembly, not the building. Spreader bar — similar to a lifting beam but loaded in compression rather than bending. The slings to the load run from the spreader bar's ends back up to a single hook above. Spreader bars are common for lifting wide loads where direct chain-block attachment would create excessive sling angles. If the load won't slung directly under a single beam clamp without exceeding sling angle limits, the correct fix is a lifting beam hung from the clamp on a single vertical sling. The clamp sees a vertical pull; the lifting beam handles the multiple pickup points. We don't currently stock standard off-the-shelf lifting beams — for custom spreader and lifting-beam assemblies, contact us at our beam clamp range or call (02) 9773 0122. Inspection, lock pins and pre-use checks Beam clamps live a hard life. They get dropped, dragged across concrete, left in the rain, and chucked back in the gear cage at end of shift. Pre-use inspection takes 60 seconds and catches the failures before they happen. Check What you're looking for Data plate / WLL stamp Legible WLL, AS 4991, manufacturer name, serial number. If you can't read it, the clamp is out of service until re-tagged. Jaw faces No mushrooming, no chipped corners, no visible cracks. Wear marks are normal; structural damage is not. Screw and cam (universal type) Screw turns smoothly through full travel. No bent threads, no seized pivot. Cam jaw moves freely. Shackle / lifting eye Pin secure, no elongation, no obvious deformation. Eye not opened up. Test certificate currency Test/inspection certificate within 12 months for general lifting use, 6 months for high-cycle environments. Many AU sites require quarterly inspection on hire-fleet equipment. Beam fit before load Clamp seated correctly, screw fully tightened, jaw in full contact with the flange. Visual check before applying load. Event riggers in theatrical and concert work commonly add a redundant safety wire around the beam through the clamp's lifting eye — the suspended-load community standard for over-audience rigging. It's not required by manufacturer instruction for normal industrial lifting, but it's standard practice in entertainment rigging and worth understanding if you cross between industrial and event work. AU dogging and rigging context — who can use a beam clamp Lifting work in Australia is regulated under the WHS framework and the high-risk work licensing system. A beam clamp used to lift a load is dogging work — slinging, directing and inspecting loads. The relevant high-risk work licences are: CPCCLDG3001 Dogging — required for slinging loads, directing crane operators, and using lifting attachments including beam clamps. The minimum licence for most beam clamp lifting work. CPCCLRG3001 Basic Rigging — covers more complex slinging, the use of structural lifts, and the erection of pre-cast and structural steel members. CPCCLRG3002 Intermediate Rigging and CPCCLRG3003 Advanced Rigging — progressively more complex applications. The NSW Government dogging glossary defines a dogger as "a person qualified to sling, inspect and direct loads." The licence is held by the individual, not the workplace. On a regulated site, the person attaching a beam clamp to a beam, fitting the chain block, hooking up the load and giving the lift signal must hold at minimum a current dogging licence. Owner-operators in private workshops are not exempt from the WHS framework — only the licence-holder requirement varies between jurisdictions and work types. If you're not licensed, the practical rules are: get the work done by a licensed dogger, operate within the manufacturer's instructions for non-occupational use (where applicable), or get the licence — short-course training is widely available across Australia. Where beam clamps fail — forum-validated failure modes Talk to AU dogmen and rigger forums and a small set of failure modes shows up over and over. The good news: every one of them is preventable. Failure mode Cause Prevention Clamp slips off the flange Sling angle exceeded WLL deration, side load applied to a vertical-only clamp, screw not fully tightened. Vertical lift only unless rated otherwise. Check screw tension after load is taken up. Use a lifting beam for multi-leg slings. Clamp jaw deforms / opens up under load Overloaded — clamp WLL exceeded. Often a misjudged load weight. Know the load weight before the lift. Add 25% margin on uncertain loads. WLL is not a "guideline." Catastrophic snap of unrated import clamp Cheap unstamped clamp from a non-specialist supplier. No AS 4991 mark, no serial number, no test certificate. Buy from rigging-equipment specialists. AS 4991 stamp + serial number + cert is non-negotiable for lifting use. Wrong flange thickness — clamp won't seat Flange too thick for the clamp's range, or operator shimmed a too-large clamp. Measure the flange before ordering. Never shim a beam clamp. Bull-rigging on top flange (not bottom) Operator clamps on top of the flange to "pull up" rather than below it. Not a rated configuration. Beam clamps are for the lower flange only unless the manufacturer's documentation specifically approves top-flange use. Beam clamp on a non-load-bearing beam Clamp attached to a purlin, lintel, secondary beam or non-structural feature. The beam being clamped to must be capable of carrying the lift load. Check structural drawings or ask an engineer if unsure. NSW Resources falling-object reports cite this as a recurring issue. Threaded-rod clamp used for lifting An electrical conduit-support beam clamp (cheap stamped, threaded-rod attachment) used under a chain block. Check for AS 4991 stamp and a WLL rating in tonnes before any lifting use. If unsure, the clamp does not lift. Damaged clamp returned to service Clamp dropped, jaw chipped or screw bent — used anyway because "it still works." Pre-use inspection mandatory. Damaged clamps go out of service until inspected by a competent person. Beam clamps for scaffolding leg support A specific use case worth flagging: girder clamps used to support scaffold legs from a steel beam. The rule from r/Scaffolding and AU scaffolding industry practice: clamps must be used in pairs, one facing the other, with a check 90 fitting to prevent slip. Single-clamp attachment is not approved for scaffold leg support — the load path under typical scaffold loading produces a slip mode that single clamps don't resist. Scaffolding under AS 1576 has its own load-rating, inspection and competency requirements. Beam clamp use in this context is part of the scaffold design; a scaffolder or scaffolding inspector signs off the configuration. If you're working a maintenance or fabrication site and a scaffold leg is hanging off a single beam clamp, that's a finding for the site safety officer, not a normal configuration. AIMS beam clamp range AIMS stocks lifting-rated beam clamps and trolleys from the four AU brands most workshops trust: Austlift Girder Clamp Model GC01 — universal screw-cam, 1–10t, 75–220mm range, AS/NZS load-rated, individual test certificate. The workhorse choice for general workshop and maintenance work. Austlift Girder Clamp Black — 2-tonne universal model, alternative finish. Beaver YC Industrial Girder Clamp — 1–10t, 90–320mm wider flange range, drop-forged alloy steel, AS 4991 compliant, premium tier. Challenger Girder Beam Clamp — 1000–10,000kg WLL, mid-tier price-to-capability. Garrick Girder Clamp 10T — heavy-duty 10-tonne specialist. For traversing applications: Beaver YC Trolley & Girder Clamp combo — 2000kg WLL trolley clamp, 72–200mm flange range. Combines clamp and rolling trolley in a single unit. Austlift Girder Clamp Trolley — 1-tonne trolley model. Challenger Push Beam Trolley — 500–5000kg push trolley for paired use with a beam clamp or running on a beam directly. Browse the full beam clamp collection or pair with a chain block, lever block or electric hoist for a complete temporary lifting setup. Need help sizing for your beam? Call us on (02) 9773 0122 or contact our team. Selection checklist + common mistakes A practical checklist before you order: Measure the beam flange — width and thickness. Don't guess from the section nomination. Know the load weight — and add a margin for uncertainty. The clamp WLL is the maximum, not the target. Vertical lift only — unless you're using a clamp explicitly rated for off-vertical loading. One clamp = one vertical line — multi-leg slings need a lifting beam below the clamp. AS 4991 stamp + serial number + test certificate — non-negotiable. No exceptions. Pre-use inspection — data plate legible, jaw clean, screw smooth, shackle pin secure. Beam capacity confirmed — the structural beam can carry the lift load. Engineer's call if unsure. Licensed operator — dogging or rigging licence as required for the work and the jurisdiction. The five most common mistakes — every one of them avoidable: Using a beam clamp as the suspension point for a two-leg or four-leg sling without a lifting beam below. Buying an unrated import clamp because it was cheap. The AS 4991 stamp is what makes it lifting equipment. Shimming a too-large clamp onto a thinner flange with washers or steel offcuts. Using an electrical conduit-support beam clamp under a chain block. Returning a damaged or undocumented clamp to service rather than retiring it. Frequently Asked Questions What is a beam clamp used for? A beam clamp is used to create a temporary lifting point on a structural steel beam. The clamp grips the lower flange of the beam, and a chain block, lever block, electric hoist or sling assembly hangs from the clamp's shackle or lifting eye. Common uses include workshop maintenance lifts, pulling engines from vehicles, lifting machinery for transport, fabrication shop assembly, and on-site mechanical installation work. What is the difference between a beam clamp and a girder clamp? None — they're the same product. "Girder clamp" is the formal term used in the NSW Government dogging glossary and in some manufacturer catalogues. "Beam clamp" is the more common search term and the one most operators use day to day. AIMS stocks all our products under both names; either term will find what you need. Can a beam clamp be used for lifting? A lifting-rated beam clamp can — if it's stamped to AS 4991, has a current test certificate, and is being used within its WLL and flange range. Hanging or suspension beam clamps are not rated for lifting and must not be used under a chain block. Threaded-rod beam clamps for electrical conduit support are not lifting equipment and must not be used to lift a moving load. Are beam clamps and lifting beams the same thing? No. A beam clamp clamps onto a structural beam to provide a temporary lifting point. A lifting beam is a rated steel beam hung below the hoist hook, used to spread a load across multiple pickup points. They're often used together — the lifting beam hangs from the beam clamp on a single vertical sling, and the slings to the load attach to the lifting beam. Can I use a beam clamp on an H-beam or wide flange section? Yes, provided the flange width and thickness fall within the clamp's specified range. H-beams and universal columns (UC) have wider, thicker flanges than universal beams (UB) of the same depth. Measure the actual flange dimensions and check the clamp's data plate against the measurements. The Beaver YC range covers 90–320mm flange widths and handles most AU UB and UC sections. What is the WLL of a beam clamp when used at an angle? For most beam clamps, the answer is zero — they're rated for vertical lift only. The Austlift GC01 manual specifies vertical lift only; Beaver YC, Challenger and Garrick clamps in the AIMS range follow the same rule. A small number of specialist clamps (Tiger BCU, certain Crosby and Riley models) are rated for off-vertical loading at specified angles, but these are the exception. Check the data plate before assuming any side-load capacity. Do beam clamps comply with AS 4991? All lifting-rated beam clamps stocked at AIMS comply with AS 4991:2004 and are supplied with an individual test certificate and a unique serial number. AS 4991 is the primary Australian Standard for below-the-hook lifting devices including girder clamps. EN 13155 (the equivalent European standard) is not accepted as a substitute on most AU principal-contractor sites — AS 4991 stamping is what's required. Can I use one beam clamp to lift a load with a two-leg sling? No — not without a lifting beam between the clamp and the slings. Two or more sling legs from a single clamp apply a side load to the clamp jaw, which is rated for vertical loading only. The fix is a lifting beam (spreader bar) hung from the clamp on a single vertical sling. The slings to the load attach to the lifting beam, and the clamp sees only the vertical line it's rated for. What's the difference between AS 4991 and AS 1418.2? AS 4991:2004 covers the design, testing and marking of lifting devices including beam clamps, plate clamps and lifting magnets. AS 1418.2 covers serial-hoists (chain blocks, lever blocks, electric hoists) and the beam trolleys they run on. A girder-clamp-trolley combo is built to both standards — AS 4991 for the clamp portion, AS 1418.2 for the trolley. Can a hanging or suspension beam clamp be used for lifting? No. Hanging clamps are rated for static dead-loads — fixed services, lighting bars, conduit, ductwork. Their WLL assumes the load is centred and unmoving. Lifting under a chain block applies dynamic loads the clamp wasn't designed for. Always check the data plate: a lifting clamp will be marked AS 4991 with a WLL in tonnes; a hanging clamp will typically be marked with a maximum-load figure only and no AS 4991 reference. Do I need a dogging or rigging licence to use a beam clamp in Australia? For lifting work on a regulated workplace, yes — at minimum a CPCCLDG3001 Dogging licence. Slinging loads, attaching lifting equipment to structural members and directing crane or hoist operators are dogging activities under the WHS framework. More complex lifting (structural steel erection, complex multi-point lifts) requires a Basic, Intermediate or Advanced Rigging licence. Owner-operators in private workshops are not exempt from the WHS framework — only the licence-holder threshold varies. If you're not licensed, get the work done by a licensed dogger or do the short-course training. How do I inspect a beam clamp before use? Five-point check: data plate legible (WLL, AS 4991, serial number visible); jaw faces clean and undamaged (no mushrooming or cracks); screw and cam moving smoothly through full travel; shackle or lifting eye undamaged with secure pin; current test/inspection certificate. Damaged or undocumented clamps go out of service until re-tagged by a competent person. Pre-use inspection takes 60 seconds and catches the failures before they happen. What flange thickness range do beam clamps fit? Each clamp model specifies its own flange range, typically printed on the data plate. The Austlift GC01 1-tonne covers 75–220mm flange widths; the Beaver YC industrial range covers 90–320mm depending on capacity. Flange thickness ranges are similarly model-specific. The rule: measure both width and thickness before ordering, don't guess from the section nomination, and never shim a too-large clamp onto a thinner flange. Why does my beam clamp slip on the flange? Three common causes: side load from an off-vertical sling angle (vertical lift only unless rated otherwise), screw not fully tightened down before the load was taken up (re-check screw tension after initial load), or flange thickness outside the clamp's specified range. A beam clamp that's slipping under load needs to be unloaded immediately and the cause identified before continuing. Can a beam clamp be used on top of an I-beam flange (bull rigging)? Standard lifting beam clamps are designed for the lower flange only. Top-flange "bull rigging" configurations are not rated unless the manufacturer's documentation specifically approves the orientation. The forum consensus from r/Ironworker matches the standards: bottom flange unless the data plate says otherwise. If you need to pull a load up over a beam, the conventional rigging solution is a snatch block reeving the line over the beam to a separate anchor point. For the differences between BSP, NPT, UNC and BSW thread standards, see our Thread Standards Guide. Browse key steel at AIMS Industrial for application support and stock confirmation. People Also Ask — Beam Clamps Q: What is a beam clamp used for? A beam clamp is a rigging device that attaches to the bottom flange of a structural steel beam (I-beam or H-beam) to provide a suspension point for a chain block, hoist, or load. Beam clamps are used when a fixed lifting attachment is not available — for example, during temporary lifts for equipment installation, maintenance, or removal in facilities with overhead steel structures. Q: How do I know if a beam clamp fits my beam? Beam clamps are rated for a range of beam flange widths and thicknesses. Before selecting a clamp, measure the flange width (across the bottom of the beam) and the flange thickness. Both dimensions must fall within the clamp's specified range. Operating a clamp on a beam outside its specified dimensions — particularly on an undersized or oversized flange — results in incorrect load distribution and potential failure. Q: What is the Safe Working Load (WLL) of a beam clamp? The Working Load Limit (WLL) of a beam clamp is the maximum load it is rated to carry under a direct vertical pull. This WLL decreases significantly when the lift is not vertical — a side load or angled sling imposes a horizontal component of force on the clamp and reduces effective lifting capacity. Always consult the manufacturer's load rating for the specific sling angle being used. Q: What Australian standards apply to beam clamps? AS 4991 (Lifting Devices) and AS 1418.2 (Hoists and Winches) are the primary standards relevant to beam clamps and their use in Australian workplaces. AS 4991 covers the design, testing, and safe use of lifting devices in general, while AS 1418.2 addresses hoist and crane equipment. All beam clamps and lifting equipment used in Australian workplaces should be designed, tested, and maintained to comply with the applicable Australian standards. Q: What is the difference between a beam clamp, a lifting beam, and a spreader beam? These terms describe three different devices. A beam clamp attaches to an existing structural beam to create a temporary lift point. A lifting beam (or spreader beam) is an engineered structural beam that is itself suspended from a crane and used to distribute load across multiple pick points — for example, to lift a long load from two or more attachment points. They serve fundamentally different purposes and are not interchangeable. 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Safety harnesses: fall arrest vs restraint, AS/NZS 1891.4:2025 compliance, full-body harness selection, lanyards, anchors and inspection for AU workplaces.
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