Plate, Metal Steel, Alloy, High Yield Strength Uns J42015, Grade Hy80, Type I Quenched And Tempered, Descaled Overall 0.500 In Thk 60 In W 240 In Lg 2040 Lb/Pm (Ref) One Coat Of Primer Shall Be Applied Iaw K.3.1.3 Requirements Of Tt-P-645