... Flange, Flat Flange, Slip on Flange, Welding Neck Flange, Long Welding Neck Flange, Blind Flange, Socket Welding Flange, Thread Flange, Screwed Flange, Lap ... F50, F52, F56, F60, F65, F70 Stainless steel flanges ASTM A182 F304/304L, F316/316L, F316H, F310, F321F44 (UNS S31254) Alloy ... Steel flanges ASTM A182 F1, F5a, F9, F11, F12, F22, F91(4) Connection ...