1. Cut the color steel plate into building gutter fittings. In fact, it is generally not advisable to directly use ordinary color steel plates for buildings.
2. In high temperature, damp heat, and acidic area environments, coated hot-dip galvanized polyester color rolls are usually used as roof color tiles.
3. Choose to put color rolls of different manufacturers, different coating thicknesses, different production times, and different coating types on the same project, which will cause color difference in a short time.
4. The indoor corrosive atmosphere is heavy, and the material selection is not required for the type of back coating, coating structure, and coating film thickness, resulting in peeling of the back coating. Example: Portland cement plant. Refractory plant.
5. PUR, PIR, bonding refractory materials, etc., the purpose of color steel plate is not clear, and polyester back paint color steel plate is mistakenly selected, resulting in poor bonding.
6. In the industrial medium environment (such as SO2.H2S.NH3. coal ash. smelting gas, etc.). Severely exposed to hot flash environment, marine salt spray environment and strong acid-base environment, the service life of color rolls will be greatly affected , the choice of architectural design was also not recognized. Ordinary color coated rolls were wrongly chosen.
7. Corrosive environment: refers to an environment containing a certain concentration of sulfur dioxide, chloride, hydrogen sulfide, fluoride, nitrogen oxides and other one or more corrosive media, acid rain or acid air.
