The color coated steel plate with galvanized steel plate as the base plate is used for color steel plate. In addition to zinc protection, the organic coating on the zinc layer plays a role of covering and isolation, which can prevent the steel plate from rusting and make the service life of color steel coil longer than that of galvanized steel plate. According to the introduction, the service life of Anhui color steel plate is 50% longer than that of galvanized steel plate. However, the service life of Anhui color steel plate will be very different if it is used in different areas and different parts, with the same zinc content, the same coating and the same coating thickness.
The use of Anhui color steel plate in industrial areas or coastal areas, because Anhui color steel plate is often affected by sulfur dioxide gas or salt in the air, the corrosion rate of Anhui color steel plate is accelerated, so the life of Anhui color steel plate is affected. In rainy season, Anhui color steel plate will be corroded quickly because the coating is soaked by rain for a long time, or the temperature difference between day and night is too big and easy to condense, so the service life of Anhui color steel plate will be reduced.
If buildings or factory buildings made of Anhui color steel plate are often washed by rainwater, the service life of Anhui color steel plate will be longer. Otherwise, the service life will be affected by sulfur dioxide gas, salt and dust. Therefore, in the design, the larger the inclination of the roof, the less likely it is to accumulate dust and other pollutants, and the longer the service life; for those areas or parts of Anhui color steel plate that are not frequently washed by rain, they should be washed with water regularly.