Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering ASTM B111 CuNi 90/10 C70600 Seamless Copper Nickel Tube/Pipe, Stainless Steel SS304 SS316 Heat Exchangers Finned Tube Aluminum Fin Tube, API 5L Line Steel OCTG Thread Pipe, ASTM A270/A249/ A511, Smls Pipe and so on.