This specification outlines a three-coat epoxy polyamide painting system for the protection of steel surfaces subject to industrial exposure@ marine environments@ and areas subject to chemical exposure such as acid and alkali. This system@ when properly applied and cured@ is capable of giving excellent protection to steel surfaces in Environmental Zones 2A (frequently wet by fresh water)@ 2B (frequently wet by salt water)@ 3A (chemical@ acidic)@ 3B (chemical@ neutral)@ and 3C (chemical@ alkaline)@ but not in potable water tanks. Although the coating herein specified has exhibited good chemical protection@ its resistance against specific chemicals should@ in the absence of applicable case histories@ be appropriately tested.