The main types of base materials for color-coated plates are:
1. Cold-rolled substrate color coated steel plate
The color plate produced by the cold-rolled base plate has a smooth and beautiful appearance, and has the processing performance of the cold-rolled plate; but any small scratches on the surface coating will expose the cold-rolled base plate to the air, so that the exposed iron will quickly Generates red rust. Therefore, this type of product can only be used for temporary isolation measures and indoor materials with low requirements.
2. Hot-dip galvanized color coated steel plate
The product obtained by applying an organic coating on a hot-dip galvanized steel sheet is a hot-dip galvanized color-coated sheet. In addition to the protective effect of zinc, the hot-dip galvanized color-coated sheet also has the function of insulating protection and preventing rust, and the service life is longer than that of the hot-dip galvanized sheet. The zinc content of the hot-dip galvanized substrate is generally 180g/mr (both sides), and the highest galvanized content of the hot-dip galvanized substrate for building exterior is 275g/m.