... Slip on Flange, Welding Neck Flange, Long Welding Neck Flange, Blind Flange, Socket Welding Flange, Flanges: Special Flanges, carbon flange, steel flange ... F42, F46, F48, F50, F52, F56, F60, F65, F70 Stainless steel flanges ASTM A182 F304/304L, F316/316L, F316H, F310, F321F44 ... EN: EN10253-1/2, EN10253-2 (8) Usage: it is used in petroleum/ chemical industry/power/ship building/paper making/metallurgy ...