seamless carbon steel tubesSize: O.D.: 6.0-114.0mmW.T.: 1-15mmL: max12000mmStandard: ASTM A192/!192M-02Chemical Composition(%)C 0.06-0.18 Mn 0.27-0.63 P max 0.035 S max 0.035 Si max 0.25Grade: 20G 12CrMoVG 15CrMoG