Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering Sch10/10s/20/30/40/80 ASTM A420wpl6 Wpl3 Alloy Pipe Tee/Fitting/Elbow/Reducer, 304L/316L/310S/317L Austenitic Stainless Steel Seamless Tubes for Petroleum Refining and Precision Applications, SAE 4140/4130/4340 Alloy Steel Pipe Cold Drawn or Rolled for Mechanical and Structural Applications and so on.