Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering 45degree 90degree ASTM 234 Carbon Steel Smls Pipe Black Bwfitting/Elbow ASME B16.9, Stainless Steel Corrugated Fire Tube Spiral Pipe for Heat Exchanger, SA213 Tp316L Pipe Bending U Bend Tube for Boiler/Heat Exchanger and so on.