Steel Pipe and Fitting, Valve, Manhole Cover manufacturer / supplier in China, offering ANSI B36.19 ASTM A312 Tp316L Stainless Steel Seamless Pipe, API 5L ASTM A53 Gr. B Seamless Schstd Carbon Steel Pipe 16 Inch, En10255 Carbon Steel ERW Welded Pipe with Plain End and so on.