... 40Cr, 10CrMoAL, 38CrMoAL, 20CrMnMo, 12CrMoVNi, 30CrMnSiABridge Steel Plate: 1>. Standard: Special Condition Grade: 14MnNbq2>. GB ... , Q420qCBuilding Structural Steel Plate: GB Q235GJC, Q345GJC, Q390GJC, Q420GJC, Q460GJCHigh Quality Carbon Steel Plate: 1>. ASTM ... 45#, 50# Wear Resistant Steel Plate: Standard: Special ConditionGrade: NM360A, NM360B, NM400A, NM400B Mould Steel Plate: Standard: Special ...