Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering En 1057 Cu-Dhp/Cw024A Copper/Brass Straight Tube for Water Pipeline, ASTM A179/A179m Seamless Cold Drawn Low-Carbon Steel Tubes for Heat Exchangers, Wcb API SS304 Swing Check Valve Industrial for Oil and Gas Transportation and so on.