Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering ASTM/ASME A179 Carbon Steel Seamless Pipe for Boiler and Heat Exchanger, A179 A192 A213 Seamless Carbon Alloy Stainless Steel Tube for Boiler Heat Exchanger, En10216-2 10crmo9-10 Seamless Alloy Pipe ASTM A335 P22 High-Temp-Resistant for Power Station and so on.