Color-coated steel plate is a kind of steel plate with organic coating, which has the characteristics of good corrosion resistance, bright color, beautiful appearance, convenient processing and forming, and has the advantages of steel plate original strength and low cost. The substrates of color coated steel plates are cold-rolled substrates, hot-dip galvanized substrates and electro-galvanized substrates. Coating types can be divided into polyester, silicon modified polyester, vinylidene fluoride and plastisol. The surface condition of color-coated steel plate can be divided into coated plate, embossed plate and printing plate. Color-coated steel plate is widely used in construction home appliances and transportation industries. For the construction industry, it is mainly used in steel structure workshops, airports, warehouses and refrigeration, etc. For the roofs, walls and doors of industrial and commercial buildings, color steel plates are rarely used in civil buildings.

　　The enamel steel plate has a very low carbon steel plate with a substrate thickness of 1.6mm (carbon content is 0.004, and the carbon content of general steel plate is 0.060). The expansion coefficient of the enamel layer glaze is close, and there will be no expansion stress after firing. The warping and bulging phenomenon caused by this phenomenon also improves the adhesion strength of the enamel to the steel plate. Its production process is similar to the sintering process. It is sintered at a high temperature of ℃. The enamel steel plate has the strength of steel plate and the smoothness and hardness of glass, but it does not have the brittleness of glass. The glass mixture can be adjusted into various colors and patterns. At present, the quality inspection standards for enamel steel plates and the construction specifications and acceptance standards for enamel steel plates as cladding materials have not yet been issued. Therefore, enamel steel plates are rarely used in construction projects.