... GB 16Mn, 15MnV, 15MnVN, Q460C Shipbuilding and Offshore Platform Steel Plate:Classification Society Certificate: CCS,DNV,GL,LR,BV ... DH36, EH36, AH40, DH40, EH40, 2H Grade 50 Alloy Structural Steel Plate:Standard: Special ConditionGrade: 50Mn2V, 15CrMo, 20Mn2, 40Mn2, ... of crane, hydraulic support coal mine machinery equipment and other structures.Q420Q460AH60AH-Representatives of angang high strength ...