ASTM A514 GrQ, ASTM A517 Gr Q Steel Plate. Steel Plate for High-Yield-Strength, Quenched and Tempered Alloy Steel Plate, Suitable for Welding. Steel Grade: ASTM A514 Gr Q ASTM A514 Gr A, B, E, F, H, P Thickness: 8-120mm Width: 1500-3500mm Length: 3000-20000mm Steel Plate for Pressure Vessel Plates, Alloy Steel, High-Strength, Quenched and Tempered. Steel Grade: ASTM A517 GR Q ASTM A517 Gr A-Q Thickness: 8-120mm Width: 1500-3500mm Length: 3000-20000mm