Because coatings can be of various colors, coated steel plates are customarily called color coated steel plates. Because the coating is carried out before the forming process of steel plate, it is also called pre-coated steel plate abroad. The technological process is as follows: the color coated steel plate is made of cold-rolled steel plate and galvanized steel plate as the base plate, after surface pretreatment (degreasing, cleaning, chemical conversion), continuous coating (roll coating), baking and cooling. Although the hot-dip galvanized substrates with the largest amount of building materials have great capacity at present, there is a lack of good substrates such as flat galvanized steel coils without zinc sparkle and galvanized alloy coated steel coils; the variety and quality of domestic coatings can not fully meet the demand; the high price of imported coatings reduces the competitiveness, and the plastic film needed for coated color boards still needs to rely on imports. Lack of color coated steel coils with thick coating, functional, high strength and rich color.
Following is an introduction to the storage precautions of the color coated coil by the color coated coil manufacturer. The color coated coil is made of cold rolled strip, galvanized strip (galvanized and hot galvanized) as the base plate on the continuous unit, after surface pretreatment (degreasing and chemical treatment), and by roll coating, one or more layers of liquid coating are coated. The plate obtained by baking and cooling is coated steel plate.