... 3.standard:ANSI, DIN, EN1092-1, FlangesGeneral DescriptionCarbon steel, stainless steel and alloy flanges, are manufactured as per the standards ... b) Plate cutting flanges 2) Materials: a) Carbon steel b) Stainless steel c) Alloy steel 3) Standards: a) ANSI, DIN, EN1092-1, NFE, ... Kinds of forging: a) Free forging b) Die forging c) Rolling 7) Rustproof treatment: a) Lightly oiled b) Galvanized ...