... flange,flanges factory ) Material:Carbon Steel ASTM A105, ASTM A350 LF1, LF2 CL1/CL2, Item name:Socket Welding Flange(welding flange,flanges ... A694 F42, F46, F48, F50, F52, F56, F60, F65, F70Stainless Steel:ASTM A182 F304/304L, F316/316L, F316H, F310, F321F44 (UNS ... )Alloy:ASTM A182 F1, F5a, F9, F11, F12, F22, F91 Socket Welding Flange(welding flange,flanges factory )