Color Coated Steel Coils（PPGI）
Since the color coated steel plate is coated with paint before the steel plate is processed and formed, it is also called prepainted steel sheets.
Prepainted steel sheet is coated with the organic layer, which provides higher anti-corrosion property and a longer lifespan than that of galvanized steel sheets.
The base metals for the prepainted steel sheet consist of cold-rolled, HDG electro-galvanized and hot-dip alu-zinc coated. The finish coats of prepainted steel sheets can be classified into groups as follows: polyester, silicon modified polyesters, polyvinylidene fluoride, high-durability polyester, etc.
The production process has evolved from one-coating-and-one-baking to double-coating-and-double-baking and even three-coating-and-three-baking.
The color of the prepainted steel sheet has a very wide selection, like orange, cream-colored, dark sky blue, sea blue, bright red, brick red, ivory white, porcelain blue, etc.
The prepainted steel sheets can also be classified into groups by their surface textures, namely regular prepainted sheets, embossed sheets, and printed sheets.
The production of prepainted steel sheet originated in the United States in the mid-1930s. In the beginning, the technology was only adopted in producing a prepainted steel strip. Till 1995, the first batch of coating equipment for broad strip steel was invented and produced in the United States in 1955. In the 1960s, the production of the prepainted steel sheet made rapid development in the United States, Europe, and Japan.
The prepainted steel sheets are mainly provided for various commercial purposes covering architectural construction, electrical household appliances, transportation, etc.
The prepainted steel sheet for construction is an attractive substitute for wood and other materials, owing to its advantages, including fast color, good durability performance, chalking resistance, etc. It minimizes the maintenance cost. At the same time, various colors, surface structures, and coatings provide such products with great flexibility and option.The prepainted steel sheets satisfy the large-scale halls’ rigorous requirements in construction in material color, shape, quality, property, etc.
The prepainted steel sheet for household appliances often takes electro-galvanized, hot-dip zinc-coated and cold rolled steel sheets as its base metal, which is widely applied in manufacturing refrigerators, large-scale air-conditioning systems, refrigerating cabinet, bread maker, furniture, etc.