What are the types of substrates for color coated panels

Aug 04,2023


Pre-coated board, also known as coated board, is a metal coil as the substrate, on the surface coated or laminated with a variety of organic coatings or plastic films made of building materials, the types of substrate of pre-coated board mainly include:

1. Cold-rolled substrate color coated steel plate

The color plate produced by cold-rolled substrate has a smooth and beautiful appearance and has the processing performance of cold-rolled plate; However, any small scratch on the surface coating can expose the cold-rolled substrate to air, causing red rust to quickly develop in the exposed iron. Therefore, such products can only be used for temporary isolation measures and indoor materials that are not demanding.

2. Hot-dip galvanized color coated steel plate

The product obtained by coating organic coatings on hot-dip galvanized steel sheets is hot-dip galvanized color coated sheets. In addition to the protective effect of zinc, the organic coating on the surface also plays a role in isolation protection and preventing rust, and the service life is longer than that of hot-dip galvanized sheet. The zinc content of hot-dip galvanized substrates is generally 180g/mr (double-sided), and the galvanizing content of hot-dip galvanized substrates for external buildings is up to 275g/mr.

3. Hot-dip aluminum-zinc color coated plate

The product obtained by coating organic coatings on hot-dip aluminum-zinc steel sheets is hot-dip galvanized color coated sheets, of which the aluminum-zinc content in hot-dip aluminum-zinc steel plates is 55% Al-Zn and 5% Al-Zn.

4. Electro-galvanized color coated plate

With electro-galvanized sheet as the substrate, coated with organic coating baking the product is electro-galvanized color coated plate, because the zinc layer of the electro-galvanized sheet is thin, usually the zinc content is 20/20g/m2, so the product is not suitable for use outdoors to make walls, roofs, etc. However, because it has a beautiful appearance and excellent processing performance, it can be mainly used for home appliances, audio, steel furniture interior decoration, etc.