1 in (25 mm) Weld Neck Flange, ANSI B16.5 Class 600 | P6FW25X
Available
This AAP weld neck flange is made from carbon steel to ANSI B16.5 Class 600 (manufacturer-stated). It is supplied in 6 sizes from 1 in (25 mm) to 6 in (150 mm).
A weld neck flange has a long tapered hub that is butt welded to the pipe, which passes load smoothly into the pipe wall. It is the usual choice where pressure, temperature or cyclic loading is higher. AAP describes forged steel flanges as commonly specified in the oil, gas, petrochemical and mining sectors, where pressure, temperature and safety considerations are higher. They are hot forged and then machined.
AAP's temperature and pressure table for ASTM A105 flanges lists a maximum working pressure of 10,210 kPa (102.1 bar) for Class 600 from -29 to 38 °C, falling to 5,750 kPa (57.5 bar) at 425 °C. AAP notes that A105 forgings are not recommended for prolonged use above 427 °C.
Where this product is used
- Pipework with higher pressure, temperature or cyclic loading
- Joints to flanged valves, pumps and vessels where a butt weld is specified
- Connections to pressure vessel and equipment nozzles
- Oil, gas, petrochemical and mining pipework
Features
- 6 sizes from 1 in (25 mm) to 6 in (150 mm)
- Made to ANSI B16.5 Class 600 (manufacturer-stated)
- Material: carbon steel (AAP quotes ratings for ASTM A105 forgings)
- Raised face, 6.3 mm raised face height
- Maximum working pressure 10,210 kPa (102.1 bar) up to 38 °C, per the manufacturer
- Tapered hub, butt welded to the pipe
- Marked where possible with heat number, size, table, grade and dimensional standard
Key specifications
| Specification | Detail |
|---|---|
| Brand | AAP |
| Flange type | Weld neck flange |
| Standard (manufacturer-stated) | ANSI B16.5 Class 600 |
| Material | Carbon steel (AAP quotes ratings for ASTM A105 forgings) |
| Face | Raised face, 6.3 mm raised face height |
| Connection | Weld neck, butt welded to the pipe |
| Sizes | 1 in (25 mm) to 6 in (150 mm) (6 sizes) |
| Maximum working pressure | 10,210 kPa (102.1 bar) at -29 to 38 °C |
| Marking | Where possible: heat number, size, table, grade and dimensional standard |
Options and part numbers
| Size | Part number | OD (mm) | PCD (mm) | Bore (mm) | Holes | Bolt size | Thickness (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 1 in (25 mm) | P6FW25X | 123.8 | 88.9 | 68.2 | 4 x 20 mm | 5/8 in | 23.8 | 1.8 |
| 1-1/2 in (40 mm) | P6FW40X | 155 | 114.3 | 76.1 | 4 x 22 mm | 3/4 in | 28.5 | 3.6 |
| 2 in (50 mm) | P6FW50X | 165 | 127 | 79.3 | 8 x 20 mm | 5/8 in | 31.7 | 5.4 |
| 3 in (80 mm) | P6FW80X | 210 | 168.3 | 88.8 | 8 x 22 mm | 3/4 in | 38.1 | 10.4 |
| 4 in (100 mm) | P6FW94X | 273.1 | 215.9 | 107.9 | 8 x 26 mm | 7/8 in | 44.4 | 19.1 |
| 6 in (150 mm) | P6FW96X | 355 | 292.1 | 123.8 | 12 x 30 mm | 1 in | 53.9 | 36.3 |
Selecting the right option
Confirm the pipe wall thickness before ordering, because the weld neck bore is matched to the pipe schedule (this version is for standard weight pipe). Match the standard and table or class to the mating flange and compare the drilling dimensions listed on this page, because flanges made to different standards are not interchangeable. Gaskets and bolting are not part of this listing. If you are not sure what suits, contact AIMS with the standard and size of the mating flange.
Related products
See also AAP Blind Flange, ANSI B16.5 Class 600, AAP Weld Neck Flange, ANSI B16.5 Class 150, AAP Weld Neck Flange, ANSI B16.5 Class 300 and AAP Blind Flange, ANSI B16.5 Class 150.
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1"
Model Number: P6FW25X
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1-1/2"
Model Number: P6FW40X
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2"
Model Number: P6FW50X
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3"
Model Number: P6FW80X
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4"
Model Number: P6FW94X
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6"
Model Number: P6FW96X
