Product Flat cold rolled low carbon steel sheets (CR4), pickled clean, lightly oiled. Sheet thickness; Minimum 0.6 mm Maximum 1.6 mm Drum length / height Minimum 480 mm Maximum 1070 mm Drum standard diameter 571.5 mm (Maximum 600 mm) Overlap minimum 2.0 mm Steel sheets should be pre-cut to size within the following tolerances. Sheet width (drum length / height) + 0.5 mm Sheet length (drum diameter) + 0.5 mm Difference between sheet diagonals 1.0 mm