Casing Pipe, Seamless Steel Pipe, High Pressure Boiler Tube manufacturer / supplier in China, offering ASTM a 276 ASTM a 479 Super Duplex SA789 S31260 Stainless Steel Pipe2205 2507 904L, API 5L X52 X60 X70 X65 ERW Welded Steel Pipe for Oil and Gas Project, 3PE Coating Anti-Corrosion Spiral Steel Pipe, 3PE Anticorrosion Seamless Steel Pipe and so on.