Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering Carbon Steel Flange So RF ASTM A105 Cl150 DN1000 for Pipe System, ASTM A333 Grade1 Grade6 Low Temperature Pipe Carbon Steel Tube, ASTM A252 A370/A751/A941/E29 Seamless Carbon Steel Pipes and so on.