... Surface Treatment: coated7. Application: ship plate, boiler plate8. Steel Grade: (S)A516 Gr709. Standard: ASME (ASTM) ... ), Q370qC, Q420qCBuilding Structural Steel Plate: GB Q235GJC, Q345GJC, Q390GJC, Q420GJC, Q460GJCHigh Quality Carbon Steel Plate: 1>. ASTM 10252 ... >. GB 20Mn, 50Mn, 10#, 20#, 25#, 30#, 35#, 40#, 45#, 50# Wear Resistant Steel ...