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Weld Neck Flange is easy to recognize at the long tapered hub designed to joined to a piping system. It is comomed used to high stress applications.
Forged steel flange is a disc-shaped piece of equipment used to connect a pipe to fittings valve other component to form a pipework system. Usually flange has been attached to pipe tube end to, then a gasket is inserted in the middle to form a seal. Finally they are joined together with bolts nuts.
ASME B16.5 Standard
This standard covers pressure temperature ratings, materials, dimensions, tolerances, marking, testing methods of designating openings for pipe flanges flanged fittings. Such as weld neck flanges, slip-on flanges, socket weld flanges, threaded flanges, blind flanges, lap joint flanges flangolets.
Specification of Forged Steel Flange
| Shape Type | Regular Long Neck |
| Sealing Face | RF, FF, FTJ |
| Size Range | 1/2" - 48"/ DN15 - DN1200 |
| Pressure Rating | Class 150, 300, 600, 900, 1500, 2500lb |
| Standard | ASME B16.5, ASME B16.47 Series A/B |
| Carbon Steel | ASTM A105 / A105N |
| Low Temp Carbon Steel | ASTM A350 LF2/LF3 |
| Pipeline Steel | ASTM A694 F42 / 46 / 56 / 60 / 65 |
| Alloy Steel | ASTM A182 F11 / 12 / 5 / 9 / 91 / 92 |
| Stainless Steel | ASTM A182 F304/304L/304H, 316/316L, 310S, 317,347,904L |
| Duplex Stainless Steel | ASTM A182 F51, F53, F44 |
Class 150 lb Weld Neck Flange Dimensions & Weight
Notes:
1) Dimension B corresponds to the pipe inside diameter. Values quoted assume 40S/Standard wall thickness.
2) Weights are based on manufacturer’s data are approximate .
3) Flat face flanges may be provided at full thickness, C, with raised face removed (the latter is nonstandard).
4) The blank space needs to be provided by purchaser.
5) If you need class 300 ,600 ,900 ,1500 ,2500 flange dimensions & weight,please contact us.
