... 3.Factory price. High quality cabon steel hot rolled checkered plate sheets Q235B,Q345,SS400,St37-2,St52,ASTM A36,S235JR) Detailed ... description of Checkered plate 1. Product name : Checkered plate, Iron checker plate,steel checker ... plate2. Material grade : Q235B,SS400,St37-2,St52,ASTM A36,A283GRC,S235JR 3.Thickness : ...