The use of galvanized steel coil Building galvanized steel coil is generally hot-dip galvanized steel plate and hot-dip aluminum zinc steel plate as the base plate, mainly processed into corrugated board or with polyurethane composite sandwich board, used for the construction of steel structure plant, airport, warehouse, freezer and other industrial and commercial buildings roof, wall, door. Home appliances with galvanized steel coil generally galvanized and cold plate as the base, used for the production of refrigerators and large air conditioning systems, freezers, toasters, furniture and so on. Transportation industry generally galvanized and cold plate as the substrate, mainly used for oil sump, automotive interior parts.