... ,ISO High Quality Stainless Steel SS316L API Pipe Fitting Coupling in Hot Sale Stainless Steel Pipe Coupling, Carbon Steel Pipe Coupling, Alloy Steel Pipe Coupling Any ... , Reducers, Caps, Crosses, Flanges, Bends, seamless Bends, pipe joints, etc.Materialcarbon steel, alloy steel, stainless steelStandardASME B16.9 B16.28, ASTM A234 A420 MSS ...