ANSI B 16.5 stainless steel 6 inch pipe flange: 1.material:stainless steel F304,F316 2.types ... on,welding nect,blind ANSI B 16.5 stainless steel 6 inch pipe flange: Flanges are the connectors used in process piping ... WN, SO, BL, plate, thread, socket and other special shapes 6) Kinds of forging: a) Free forging b) Die forging c ... per customers' requirements ANSI B 16.5 stainless steel 6 inch pipe flange