... 20Cr, 40Cr, 10CrMoAL, 38CrMoAL, 20CrMnMo, 12CrMoVNi, 30CrMnSiABridge Steel Plate:1>. Standard: Special Condition Grade: 14MnNbq2>. GB ... Q420qCBuilding Structural Steel Plate:GB Q235GJC, Q345GJC, Q390GJC, Q420GJC, Q460GJC Realative pictures:Alloy steel plate production line Pictures of ... products we prepared to exportPicture of alloy steel plate S355JR ...