Base material quality: Hot-dip galvanized or hot-dip aluminum-zinc steel coils (with strong rust resistance) have a 5-10 year longer service life than ordinary cold-rolled steel coils.
Topcoat performance: Silicone-modified polyester (SMP) topcoats (for outdoor, rain/sun-exposed areas) last 10-20 years, while ordinary polyester (PE) topcoats (for indoor/dry environments) only last 5-10 years.
Installation craftsmanship: Issues like unreserved expansion joints or poor sealing at splices easily lead to water leakage and coating damage, shortening the service life.
Usage environment: High-humidity areas (e.g., coastal regions with salty air) or corrosive settings (e.g., chemical workshops) speed up coating peeling and base material rusting.
The service life of color-coated steel coils is closely related to four key factors:
- November 1, 2024