... BL PL LJ etc Steel Flange ItemSteel FlangeMaterialCarbon Steel/Stainless Steel/Alloy Steel.StandardGB,JIS,BS,DIN.ANSI/ASTM /API,NF,GOST,EN ... , 347H, 409, 410, 410S, 420, 430Carbon Steel FlangesASTM A234, ASTM A105, ASTM A106 etc.1) ANSI B16.5, ASME B16 ... #Wall thickness for welding neck flange: STD, SCH40, SCH80, SCH160. SCHXXSMaterial: carbon steel A105, stainless steel 304/304L, 316/316LCoating: black ...