Color coated steel plate service life

Color coated steel plate service life-Due to the different uses and environmental conditions of color-coated steel sheets, there are many factors that affect their service life. According to the function of use, the service life of color coated steel plate can be divided into the following categories:

(1) The decorative service life refers to the main body fading, chalking, cracking, partial peeling off of the coating and other defects on the surface of the color steel plate. Affects the image and aesthetics of the building, but has not yet reached a level of use where the coating loses its protective effect.

(2) The service life of the coating refurbishment refers to the use time of most of the defects such as delamination and rust spots on the surface of the color steel plate, resulting in further corrosion of the substrate.

(3) The limit service life refers to the time that the color steel plate can be used for a long time without refurbishment until it is severely corroded and can no longer be used.

According to the types of color plates commonly used in the market and the environmental perspective of normal use, the service life of color-coated steel plates for construction can generally be as follows:
Decorative service life: 8 to 12 years;
Refurbishment service life: 12 to 20 years;
Ultimate service life: more than 20 years.

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