Along with the development of metallurgy, construction, automobile, household appliances and other industries on corrosion resistance and coating effect of increasingly high demand, promote the rapid development of China's continuous hot color coated galvanized steel industry and industry, especially the color board manufacturing process than the traditional processing of the coating process after saving degreasing (pickling, alkali washing, the film (Flushing), phosphating, passivation, washing) and coating (primer, topcoat, baking) operation and working time, saving cost, cost, pretreatment of coating pretreatment equipment and coating equipment costs, plant investment costs etc..
The influence of heated galvanized sheet market is due to the strong correlation between the color coated plate market and the hot-dip galvanized sheet market, and the two will maintain a certain market price difference. However, the price of hot-dip galvanized steel has not stopped yet, so the price of color coated steel as its downstream product is also difficult to stop.
Due to the great difference between the continuous hot galvanizing process of steel strip and the technology of color coated plate, the degreasing agent and conversion liquid and passivating agent have special functions and their own characteristics.
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