Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering ASTM A179 / A192 Seamless Carbon Steel Tube for Heat Exchangers and HVAC Systems in Chemical and Pharmaceutical Industry, API 5L Grade B ERW Carbon Steel Tube for Oil and Gas Pipeline / Structural Applications, ASME SA179 / SA192 Seamless Carbon Steel Tube for Condenser and HVAC Equipment and so on.