Buy Pipe Fittings Online in Australia
Pipe Fitting Selection — Quick Reference
Pipe fittings join pipework — selection by material (brass/iron/steel/stainless), connection type (threaded/buttweld/compression), and service (air/water/gas/oil/chemical). Wrong material = leaks, corrosion, or catastrophic failure on pressure systems.
| Fitting Type | Material | Best For |
|---|---|---|
| Brass Pipe Fittings (Compression) | Brass | Air, water, instrument lines — easy machining, corrosion-resistant |
| Brass (Threaded BSP) | Brass | LPG, natural gas, water service — gas-fitter approved |
| Buttweld Steel Fittings | Carbon steel / SS304 / SS316 | Permanent high-integrity industrial pipework — welded, no leaks |
| Galvanised Malleable Iron | Galv iron | Water service, light pressure — workshop + plumbing standard |
| Stainless Steel Pipe Fittings | SS304 / SS316 | Food, pharma, chemical, marine — corrosion-resistant |
| Forged Steel (3000-9000# Class) | Carbon + alloy | High-pressure hydraulic + steam — rated by pressure class |
| Hose Tail / Barb Fittings | Brass / SS / nylon | Hose-to-thread connections — clamps required |
| Quick-Couplers | Brass / SS | Tool-free connect/disconnect — air + water service |
| Compression Fittings (Olive Type) | Brass / SS | Copper tube + soft-drawn pipe — no soldering required |
Critical: Thread standard MATTERS — BSP (Australian + UK + EU standard) vs NPT (US standard) — same nominal size, INCOMPATIBLE thread profiles. Don't mix. Pressure rating must exceed working pressure × 1.5 safety factor. Brands: AAP, Champion, Dixon. Companion: pipes + tubes + fittings, camlock, hose fittings.
Pipe Fittings — Brass, Buttweld and Iron Fittings for Industrial Pipework
AIMS Industrial supplies a comprehensive range of pipe fittings for industrial, hydraulic, pneumatic and plumbing applications — covering brass fittings, buttweld steel fittings and galvanised malleable iron screwed fittings from AAP, Champion and Dixon. With over 250 fittings in stock, we cover most standard connection requirements for commercial and industrial pipework.
Brass Pipe Fittings
Champion brass fittings include in-line gauge fittings, hose barb plugs, tailpiece assortments and compression-style connections for pneumatic and hydraulic instrument lines. Brass is the standard material for compressed air distribution fittings, LPG and natural gas connections, and water service applications — providing good corrosion resistance and ease of machining.
Buttweld Steel Fittings
AAP buttweld fittings are welded into pipe systems for permanent, high-integrity connections — suited to high-pressure steam, chemical and process piping where threaded connections are not appropriate. The range covers 90° and 45° elbows, reducers and return bends in standard and extra-heavy wall. See our dedicated Buttweld Fittings collection for the full range.
Galvanised Malleable Iron Fittings
AAP and Dixon galvanised malleable iron fittings are BSP screwed for low-pressure compressed air, water and gas distribution. The range includes elbows, sockets, flanges, plugs and reducing fittings in a range of sizes. See our dedicated Iron Pipe Fittings collection for the full range.
Selecting Pipe Fittings
Fitting selection depends on pipe material, thread standard (BSP, NPT or metric), pressure rating and service fluid. Brass fittings are rated for moderate pressures in air and water service. Malleable iron is used for low-pressure screwed pipework. Buttweld fittings are specified for high-pressure and high-temperature systems. Always confirm the pressure and temperature rating before installation.
Need help selecting the right fitting for your application? Contact our team.
Also see our Couplings range for coupling-style pipe and shaft connections.
People Also Ask — Pipe Fittings
Q: What pipe fitting types does AIMS stock?
Threaded fittings (BSP and NPT), buttweld fittings (carbon and stainless steel), socket weld fittings, roll-groove fittings, compression fittings, push-fit fittings, flange fittings, and specialty fittings (camlock, kamlock, dixon). Materials range from galvanised steel through 304/316 stainless to specialty alloys for chemical service. For your application, the fluid type, pressure, temperature, and required serviceability determine the right fitting style.
Q: What's the difference between BSP and NPT pipe threads?
BSP (British Standard Pipe) uses 55-degree thread angle, common in Australia, UK, Europe, and most of the world. NPT (National Pipe Taper) uses 60-degree thread angle, the US standard. They're NOT compatible — forcing them together damages both threads and creates leaking joints. Australia uses BSP throughout most plumbing, hydraulics, and pneumatics; NPT appears on US-origin equipment. Always check before ordering replacements.
Q: Do I need parallel or tapered threads?
Tapered threads (BSPT, NPT) self-seal as they tighten — used for pressure-tight gas and pressure applications with thread sealant. Parallel threads (BSPP, BSPG) require a separate seal (washer, O-ring, or PTFE tape) and don't self-seal. Different systems use different conventions — Australian gas plumbing typically BSPT, instrument and pneumatic plumbing typically BSPP with separate sealing washers.
Q: What thread sealant should I use on pipe fittings?
PTFE tape is the workshop default for most threaded pipe applications — wrap 3-5 turns in the direction of thread engagement (clockwise viewed from end), then assemble. Anaerobic thread sealants (Loctite 567, 577, 545) work better for high-pressure or vibrating applications — they cure to a tough seal that doesn't extrude. For high-temperature or aggressive chemicals, specialty sealants are required.
Q: How tight should pipe threads be tightened?
By feel, not torque-spec — tighten until the joint stops turning and seals. Over-tightening cracks fittings or splits the surrounding casting; under-tightening leaks. Typical guideline: hand-tight plus 1-2 turns with a wrench for BSPT pressure joints. For high-pressure or critical service, follow the fitting manufacturer's specific procedure. Check for leaks after pressurising; minor weeping joints can sometimes be tightened further, badly leaking joints need disassembly and resealing.