1. The service life of coated and refurbished steel coils is approximately 12-20 years, which refers to the service life of colored coated coils with most defects such as delamination and rust spots on the surface of the steel coils, leading to further corrosion of the substrate.
2. The final service life of the steel coil is about 20 years, which refers to the time when the color coated rolled plate is used for a long time without repair until severe corrosion occurs and cannot be used again.
3. Decorative steel coil service life: about 8-12 years, referring to defects such as subjective fading, powdering, cracking, and local peeling of the surface coating of color coated coils. The impact on architectural image and aesthetics has not yet reached the point where the coating loses its protective effect.
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