Application industry: coastal high salt fog area.

Industry characteristics: Due to the high humidity in the coastal areas and the salt spray climate formed by seawater, the corrosion damage of color coated plates is large. The corrosion resistance is mainly considered in the selection of color coated plates. The use of color-coated plates at the seaside requires thick coated plates or coatings with relatively dense coatings because of the strong penetration of chloride ions in seawater, which can be directly corroded by thin or non-dense coatings. Plating. Color map steel is not recommended where seawater can splash.

Material selection criteria: Considering the salt spray environment in coastal areas, it is recommended to use salt-resistant PVDF fluorocarbon, constant color anti-fading board or HDP high weather resistant color board. The substrate should be AZ150 galvanized sheet or Z275 galvanized sheet with a front coating thickness of not less than 25μm.