1.Special Flanges,carbon flange,steel flange,forged flange 2.Material:stainless steel 3.Standard:ANSI,ASTM,JIS (1) Flanges ... , DIN flanges, EN1092-1 Flanges(3) Material: Carbon steel flanges ASTM A105, ASTM A350 LF1, LF2 CL1/CL2, ... F46, 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 Stainless Steel Blind flange