-Color coated steel coils (preprinted or galvanized steel) refer to steel sheets covered in protective paint. Steel manufacturers apply multiple layers of coating to the base steel material. A galvanized steel sheet coil consists of the following layers:
- A base steel sheet.
- Zinc oxide coating to prevent corrosion.
- Chromate coating to enhance corrosion resistance.
- Primer coating to increase paint adhesion.
- Finishing paint layer to give a steel sheet its final look.
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