... Neck Flange, Welding Neck Flange, Long Welding Neck Flange, Blind Flange, Socket Welding Flange, Thread Flange, Screwed Flange, ... F48, F50, F52, F56, F60, F65, F70 Stainless steel flanges ASTM A182 F304/304L, F316/316L, F316H, F310, ... 2, EN10253-2 (8) Usage: it is used in petroleum/ chemical industry/power/ship building/paper making/metallurgy/ ... per your request ANSI B16.5 Stainless Steel Blind flange