... . 3.Factory price. High quality cabon steel hot rolled checkered plate sheets Q235B,Q345,SS400,St37-2,St52,ASTM A36,S235JR) Detailed description ... ,steel checker plate2. Material grade : Q235B,SS400,St37-2,St52,ASTM A36,A283GRC,S235JR 3.Thickness :1.8mm-10mm4. Standard Wdith ...