Steel Pipe, Carbon Steel Pipe, Seamless Steel Pipe manufacturer / supplier in China, offering Oilfield L Construction Tubing Pipe OCTG Oil Well Service, Seamless Steel Pipe for Heavy-Duty Construction and Engineering, Smls Tubing 73mm*7mm, N-80-1, N80-Q R2, R3 Eue, Psl-2 API 5CT and so on.