Description Dimensions Mass; Mild Steel HR Sheets: 1850 x 925 x 1.6: 22.01: Mild Steel HR Sheets: 2450 x 925 x 1.6: 29.15: Mild Steel HR Sheets: 3050 x 925 x 1.6 . HDPE Sheets Cut to Size Buy Online at OKAY Plastics. HDPE sheet is used for applications that require greater strength and stiffness than LDPE (low density polyethylene).