... Q345B, Q345C, 20#, 12Cr1MoV, 15CrMo, TP304, 316 310S.S235JR and more Schedule: SCH5S, SCH10S, SCH10, SCH20, SCH30, SCH40S, ... chemical, power, gas, water, metallurgy, shipbuilding, construction and more Package: in bundles, varnish coating, ends can be ... cut, end capped With API, Mill, OMIC and SGS marksStandard codesModels of steel tubesTensite strengthMPaYield strengthMPaElongationHardnessGB308710335∼ ...