In the continuous unit with cold rolled strip steel, galvanized strip steel as the substrate, after surface pretreatment (degreasing and chemical treatment), with the roller coating method, coated with one or more layers of liquid paint, after baking and cooling the sheet is coated steel plate. Because the coating can have a variety of different colors, it is customary to coat steel plate called color coated steel plate. In addition to the protective effect of zinc, the organic coating on the surface also plays the role of isolation protection and rust prevention, and the service life is longer than that of cold rolled plate.
Over the years, domestic iron and steel enterprises have made remarkable achievements in the process optimization of steel deep processing industry and the application of energy saving and emission reduction technology, especially for color coating and galvanized sheet production line projects by taking effective energy saving measures, energy saving and consumption reduction effect is remarkable.