What is a weld neck flange?
The weld neck flange comprises of a round fitting that extends beyond the rim of the circumference. These flanges, typically manufactured from forging, are actually welded to pipes. The rim has numerous holes drilled into it that enables the flanged to be attached to a bolted flange. This design is far better because of the structural valve.
Specification of Forged Steel Flange
|Shape Type||Regular and 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|