Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering ASTM A182 F304 F316L Weld Neck Flange ASME B16.5 Class 150 300, Ezs En 1092-1 CuNi 90/10 Weld-on Collar Ring DN400 Pn10 for Industrial, CuNi 70/30 Stub End Assembly with Reducer and Flange and so on.