Casing Pipe, Seamless Steel Pipe, High Pressure Boiler Tube manufacturer / supplier in China, offering ASTM A106 Smls Pipe Black Smls Tube A106 Sch 40 St37 Ms Smls Carbon Steel Seamless Pipe Pipe ASME B36.10m Be Smls Sch120 ASTM A333 Gr. 6 Nace Mr 0175, Nace Mr 0175 Seamless Steel Pipes ASTM A106 Gr. B API 5L Psl1 Psl2, API 5L X52 X60 X70 Psl2 IPS-M-Pi-190 (4) Nace Mr-0175/ ISO 15156 Seamless Steel Pipe and so on.