As a popular material today, coated steel plate is used in construction, home appliances, transportation, packaging, machining, interior decoration, automobile industry and other industries. It has the characteristics of high weatherability, high corrosion and high processing.
The coated steel sheet is a product made of cold-rolled steel sheet, galvanized steel sheet and other metal sheets as the substrate, the surface is cleaned and degreasing, and then covered with an organic film (PVC film, etc.), and then baked and cured.
The coated steel plate using galvanized steel plate as the substrate, in addition to zinc protection, the color film layer on the zinc layer plays the role of covering and isolation, which can prevent the steel plate from rusting, and its service life is longer than that of the galvanized steel plate. The life is more than half longer than that of galvanized steel. The product obtained by pasting the organic color film on the hot-dip galvanized steel sheet is the hot-dip galvanized color-coated sheet. In addition to the protective effect of zinc, the organic coating on the surface of the hot-dip galvanized color-coated sheet also plays the role of insulation and protection, preventing rust, and the service life is longer than that of the hot-dip galvanized sheet. The zinc content of hot-dip galvanized substrate is generally 180g/m2 (double-sided), and the zinc content of hot-dip galvanized substrate for building exterior is 275g/m2.
Coated steel sheets for construction generally use hot-dip galvanized steel sheets and hot-dip galvanized steel sheets as substrates, and are mainly processed into corrugated sheets or composite sandwich panels with polyurethane, which are used to build steel structure workshops, airports, warehouses, freezers and other industrial and Roofs, walls, doors of commercial buildings.
