Coated boards, also known as organic coated boards or prepainted steel coils, are made by applying or lamination various organic coatings or plastic films to the surface of metal rolls (cold-rolled steel, galvanized steel, aluminum-coated steel, high-aluminum alloy steel, stainless steel, etc.). As they are pre-coated at the metallurgical plant, these coils can be directly processed into finished products by the users, hence the alternate name of prepainted coils.
Coated steel plates combine the benefits of both organic polymers and steel plates, offering the excellent coloring, molding, corrosion resistance, and decorative properties of organic polymers, as well as the high strength and ease of processing of steel plates, allowing for easy operations like cutting, bending, deep drawing, and welding. This results in products made from organic coated steel plates having superior practicality, aesthetics, workability, and durability. There are numerous types of coated steel plates, exceeding 600, but there is no unified classification method, as it's difficult to find a distinguishing standard among the various types. Moreover, each manufacturer has its unique equipment and processes, leading to a wide variety of product types. Classification is currently done according to general conventions.
1. Categorized by substrate usage, common substrates for organic coating steel plates include cold-rolled steel, galvanized steel, electro-galvanized steel, alloyed steel, zinc-aluminum plated steel, electro-galvanized alloy steel, tin-plated steel, chrome-plated steel, and aluminum plates, etc.
2. Organic coated steel sheets are categorized by processing technology and coating methods, which include roller coating, spray coating, powder coating, lamination, and printing. They are also classified by the number of coatings and curing processes, such as one-coat-one-cure, two-coats-two-cures, three-coats-three-cures, and four-coats-four-cures. Furthermore, they can be further divided into wood grain, marble grain, leather grain, cement mortar grain, and other patterned coated steel sheets.
3. Categorized by paint type, typically classified by paints used for organic coatings, including polyvinyl chloride coated steel plate, polyester coated steel plate, silicone polyester coated steel plate, etc.
4. Classified by coating performance, including high weather-resistant coating panels, high-temperature-resistant coating panels, self-extinguishing coating panels, sterilization coating panels, non-stick snow coating panels, fingerprint-resistant coating panels, and self-lubricating coating panels, among others.
5. Categorized by special coatings and applications, including epoxy zinc-rich coatings, organic coated steel sheets based on cold-rolled steel plates, velvet-coated steel sheets, and some special machine-coated sandwich panels such as wood film panels, core panels, and vibration-proof panels, etc.
