Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering En10217 S275 S275jr ERW Carbon Steel Pipeline Factory Direct for Marine Project, ASTM A334 Seamless and Welded Carbon/Alloy Steel Pipe for Low-Temperature Service, ASTM B466 Copper Nickel 90/10 Seamless Tube Seawater Corrosion Resistance HVAC/Shipbuilding/Industrial Mtc-Certified and so on.