Carbon Steel Pipe, Stainless Steel Pipe, Copper Nickel Tube manufacturer / supplier in China, offering Seamless Carbon Steel Pipe 5L X52 for High-Pressure Applications, En 10224 X46 Large Diameter Welded Steel Pipe ID 960mm × 10mm for Water Pipeline and Structural Engineering, ASTM A53 Grade B Seamless Pipe Sch40 Black Carbon Steel for Pipeline and so on.