Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering ASTM B135 C23000 Copper Tube/Copper Pipe for Heat Exchanger and Water Pipe, GOST9940-81 Seamless Ferritic/Martensitic Hot-Deformed Stainless Steel Pipes for Heat Exchangers, in Industrial, ASTM A333 Gr. 6 Alloy Steel Pipe 10/20/40/80/100/120/160/Xxs for Aerospace Industry and so on.