Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering Stainless Steel Pressure Tubes ASTM A249 Ss Welded Pipes for Heat-Exchanger Condenser Tubes, ASTM C44300 High Hardness Seamless Copper Alloy Tubes for Petroleum Industry, Heat-Exchanger ASTM A213 T91 Seamless Boilers Alloy-Steel Pipe for High Temperature Service and so on.