The color coated steel sheet is made of cold-rolled steel sheet and galvanized steel sheet as the substrate, after surface pretreatment (degreasing, cleaning, chemical conversion treatment), the coating is applied in a continuous method (roller coating method), and it is made by baking and cooling Products. The common two-coat two-baking continuous color coating machine process flow main production process is: uncoiling → pretreatment → coating → baking → post-processing → coiling.
Color coated board
Product Usage:
Prepainted steel roofing sheet has light weight, beautiful appearance and good anti-corrosion performance, and can be directly processed. It provides a new type of raw material for the construction industry, shipbuilding industry, vehicle manufacturing industry, furniture industry, electrical industry, etc. Wood, efficient construction, energy saving, pollution prevention and other good effects.
The ppgi color coated galvanized steel sheet using galvanized steel sheet as the substrate, in addition to zinc protection, the organic coating on the zinc layer plays a role of covering and isolation, which can prevent the steel sheet from rusting, and the service life is longer than the galvanized steel sheet. According to the introduction, the coated steel sheet 50% longer service life than galvanized steel.
However, in different regions and different parts of use, using the same galvanized amount, the same kind of paint, the same coating thickness of the color coated board, its service life will be very different. For example, in industrial areas or coastal areas, due to the effects of sulfur dioxide gas or salt in the air, the corrosion rate is accelerated and the service life is affected. In the rainy season, the coating will be wetted by rain for a long time, or the part where the temperature difference between day and night is too easy to condense will be corroded quickly, and the service life will be reduced.
Buildings or workshops made of colored coated steel sheets often have a long service life when they are washed by rain. Otherwise, they will be affected by the effects of sulfur dioxide gas, salt, and dust. Therefore, when designing, the greater the inclination of the roof, the less likely to accumulate dust and other dirt, and the longer the service life; those areas or parts that are not frequently washed by rain should be washed regularly with water.
