... 1/2"to 72" 3. Material: Carbon steel, stainless steel ANSI B16.5 Carbon Steel Flange long neck flange(1) Flanges Type: ... , DIN flanges, EN1092-1 Flanges(3) Material: Carbon steel flanges ASTM A105, ASTM A350 LF1, LF2 CL1/CL2, ... F48, F50, F52, F56, F60, F65, F70 Stainless steel flanges ASTM A182 F304/304L, F316/316L, F316H, F310, ... or as per your request ANSI B16.5 Carbon Steel Flange long neck flange