Colr steel tile rust is generally divided into slight corrosion color steel tile, light moderate corrosion color steel tile, more serious corrosion color steel tile. According to different rust situation, the disposal method is different. Since the rise of China's industry, steel structure workshops are all over the country, increasing continuously every year. The colored steel tiles on the roof and wall of steel structure workshops are aged and rusted due to different factors such as wind, sun, acid rain, chemical pollution, etc. In addition, the market of color steel tile is chaotic, the quality is different, some manufacturers use inferior baking paint to save cost, and the original paint film has low weatherability and anti-corrosion performance, which leads to the decline of service life.1. Slightly rusted color steel tile: it is relatively easy to renovate the slightly rusted color steel tile flat roof. People only have to follow the above production process and operate normally. Because it is slightly rusted, they can immediately select 1-2 times of anti-corrosion paint for painting, which can have very good anti-corrosion effect, In addition, it can reasonably reduce the renovation cost.