Dy-Mark Zinc Gal is a zinc rich, high performance, heavy duty corrosion inhibitive primer suitable for use on ferrous metals such as steel, iron and galvanised iron. Zinc Gal contains 91% zinc in the dry film. It is used extensively in metal fabrication and gives superior cathodic protection to weld joints. Suitable for use on fences, gates, balustrades, rails, ducting and trailers. Zinc Gal conforms to AS3750.9:2005 Type 1. It dries to a matt grey finish.