The steel structure (common-type) protective coating support system is a product system made from iron red or zinc phosphate with excellent anti-rust performance as the anti-rust raw material, supplemented by epoxy mica iron intermediate paint with excellent shielding effect and acrylic polyurethane topcoat or fluorocarbon topcoat with excellent weather resistance and color retention functions. Featuring excellent corrosion, rust and weather resistance and color retention performance, the product system is a reliable anti-corrosion product system with a proven track record in the market. It is widely used in steel structures under all kinds of atmospheric environments, including bridges, petrochemical refineries, thermal power plants, wind power stations, steel mills, chemical plants and paper mills.