... Seamless steel tubes and pipes for high pressure boilerASTM A106: Standard Specification for Seamless Carbon Steel Pipe for High ... Q345B)GB 5310: 20G, 12Cr1MoV, 12Cr1MoVG, 12CrMoGASTM A106: Gr A, Gr B, Gr CASTM A333: Gr 1, Gr 3, Gr 6, Gr 8ASTM A335: P1, P2, P5, P9, P11 ... , 17Mn4, 19Mn5, 15Mo3, 13CrMo910, 10CrMo910, 14MoV63, X20CrMoV121API 5L: A B X42,X46, X52, X60, X65, X70, X80Size:Outer Diameter: Hot ...