Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering ASTM A252 SSAW Carbon Welded Steel Pipe for Structural Support for Foundation, GOST9940-81 Seamless Ferritic/Martensitic Hot-Deformed Stainless Steel Pipes for Heat Exchangers, in Industrial, TP304/316/321/347 U-Tubes for Heat Exchangers & Condensers and so on.