1.name:BS stainles steel Flanges 2.Brand; Dong Shou 3.Material: stainless steel 4.Standard: ASTM A 16.5, ASTM A16.47,ISO,DIN, nameBS stainles steel FlangesSize1/2"-40"MaterialRst37.2, S235JRG2,C22.8,SS400,SF440A,A105 Typeplate,slip-on,welding neck,threaded,socket weld,blindSurface treatmenttransparent/Yellow/Black anti-rust paint,tranparent oil BS stainles steel Flanges