Casing Pipe, Seamless Steel Pipe, High Pressure Boiler Tube manufacturer / supplier in China, offering ASTM 201 304 316 316L 2205 2507 Hollow Section Stainless Steel Pipe, Tpco API 5L X42 X46 X52 Line Pipe/ Seamless Steel Pipe/Carbon Steel Pipe, ASTM A182 F51 F53 F55 F60 Duplex Stainless Steel Forged Flange and so on.