This Malaysian Standard applies to continuous hot-dip zinc-aluminium alloy, zinc-aluminium-magnesium alloy and aluminium-zinc-magnesium alloy coated carbon steel sheet of structural quality, commercial quality and drawing quality. The product is intended for applications where resistance to corrosion is of prime importance. The steel sheet is produced in a number of grades, coating mass, ordering conditions, and surface treatments. Metallic coated steel sheet is produced in thicknesses from 0.16 mm to 5 mm after zinc coating, and in widths of 600 mm and over in coils and cut lengths. Metallic coated steel sheet less than 600 mm wide may be slit from wide sheet and will be considered as strip. The thickness of zinc-aluminium alloy, zinc-aluminium-magnesium alloy, aluminium-zinc-magnesium alloy coated steel sheet may be specified as a combination of the base metal and metallic coating, or base metal alone. The purchaser shall indicate on the order which method of specifying thickness is required. In the event that the purchaser does not indicate any preference, the thickness as a combination of the base metal and coating will be provided. Annex A describes the requirements for specifying the thickness as base metal alone.