The fireproof and moisture-proof properties of coated steel sheets are mainly due to the flame-retardant and moisture-proof film material covering their surface. This film material has excellent waterproof and moisture-proof performance and can effectively isolate the erosion of external moisture and water. At the same time, the steel sheet itself has high fire resistance and can resist the combustion and spread of flames for a certain period of time, thereby protecting the building structure from the impact of fire.
