... Flange, Socket Welding Flange, Flanges: Special Flanges, carbon flange, steel flange, forged flange; with good quality, reasonable price, promptly delivery.(1) ... BS flanges, DIN flanges, EN1092-1 Flanges(3) Material: Carbon steel flanges ASTM A105, ASTM A350 LF1, LF2 CL1/CL2, LF3 ... , F46, F48, F50, F52, F56, F60, F65, F70 Stainless steel flanges ASTM A182 F304/304L, F316/316L, F316H, F310, F321F44 ...