Protective Function of Coloured Steel Plate

Date of release:2019-03-07 Author: Click:

Coating organic coatings on hot-dip galvanized steel sheet is the product of the manufacturer of color coated steel sheet, that is, hot-dip galvanized color coated steel sheet. In addition to the protective effect of zinc, the organic coating on the surface of hot-dip galvanized color coated sheet also plays the role of isolation and protection against rust, and its service life is longer than that of hot-dip galvanized sheet. The zinc content of hot-dip galvanized substrates is generally 180 g/m2 (double-sided). The highest zinc content of hot-dip galvanized substrates for external use is 275 g/m2.

Using galvanized sheet as base plate and baking with organic paint, the product is galvanized color coated sheet. Because the zinc layer of galvanized sheet is thin and usually contains 20/20g/m2 of zinc, it is not suitable for outdoor wall and roof making. But because of its beautiful appearance and excellent processing performance, it can be mainly used in household appliances, audio, steel furniture, interior decoration and so on.

Compared with the imported color coated steel, the quality of the coatings of color steel is not so good, which reduces the competitiveness. Especially in order to reduce the cost, many small enterprises in China use low quality coatings, which seriously affects the quality of the color coated steel plate.

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