... -13000mm 5. (S)A516 G Mild steel checker plate(Q235B,SS400,St37-2,St52,ASTM A36,A283GRC,S235JR) Specificate1.Thickness: 5 ... Steel Plate: 1>. ASTM 10252>. GB 20Mn, 50Mn, 10#, 20#, 25#, 30#, 35#, 40#, 45#, 50# Wear Resistant Steel Plate: Standard ... steel plates as customers' requirement. Mild steel checker plate(Q235B,SS400,St37-2,St52,ASTM A36,A283GRC,S235JR)