Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering Cu-Ni C70600, C70620-Copper Nickel Alloy Tubing for Petrochemical Facilities, ASTM A252 A500 Hollow Carbon Seamless Steel Pipe for Machinery Industry, Stainless Steel Tube for Boiler Heat-Exchanger Steam High Pressure Tube ASTM A249/A249m and so on.