surface, e.g. aluminium, chrome, cobalt, nickel, copper, brass, bronze, zinc, silver, cadmium, tin, lead Painting Organic or inorganic polymers combined with binders, pigments, fillers, solvents, additives and water Printing E.g. silk-screening Metallic coverings Galvanising Metallic covering by means of immersion, spraying or similar Powder coating Coloured plastic particles are permanently bound with the steel surface electrostatically. Coating Duplex coating First a metal cover (galvanising), then a coating system Plasma-vacuum coating In a vacuum, chemical