... Surface Treatment: coated7. Application: ship plate, boiler plate8. Steel Grade: (S)A516 Gr709. Standard: ASME (ASTM) Packaging ... , DH36, EH36, AH40, DH40, EH40, 2H Grade 50Alloy Structural Steel Plate: Standard: Special ConditionGrade: 50Mn2V, 15CrMo, 20Mn2, 40Mn2, ... >. GB Q235qC, Q345qC (16Mnq), Q370qC, Q420qCBuilding Structural Steel Plate: GB Q235GJC, Q345GJC, Q390GJC, Q420GJC, Q460GJCHigh Quality ...