... Structural Steel Plate:1)Grade:Q235-A,B,C,D2)Specifications:5-120x1500-3660xL3)Standard:GB/T3274-1988Alloy Structural ... Steel Plate:1)Grade:Q235 A,B Q345 A,B,C ... ,D,E Q390 A,B,C,D,E Q420 A,B,C,D,E Q460 C,D,E 2)Specifications: ... :Gr.380 Gr.415 Gr.450 Gr.4852)Specifications:6-80x1500-3500xL3)Standard:ASTMA515/A515M-1997 ASTMA516/ ...