1.name:BS stainless steel Flanges 2.Brand; Dong Shou 3.Material: carbon ... A 16.5, ASTM A16.47,ISO,DIN,GB NAME BS stainless steel Flangestypeplate,slip-on,welding neck,threaded,socket weld ... , constructionSurface treatment transparent/Yellow/Black anti-rust paint,tranparent oil BS stainless steel Flanges