Coated Sheets, also known as Organic Coated Sheets or Pre-Painted Steel Coils, are made by applying or lamination various organic coatings or plastic films to the surface of metal coils (cold-rolled steel, galvanized steel, aluminum-coated steel, high-aluminum alloy steel, stainless steel, etc.). As these coils are finished with the surface coating in the metallurgical plant, they can be directly processed into products by the user, hence also referred to as Pre-Painted Coils.
Coated steel sheets combine the benefits of both organic polymers and steel plates, offering the excellent coloring, molding, corrosion resistance, and decorative properties of organic polymers, along with the high strength and ease of processing of steel plates, allowing for easy cutting, bending, deep drawing, and welding. This results in products made from organic coated steel sheets that possess superior practicality, aesthetics, workability, and durability. There are numerous types of coated steel sheets, exceeding 600 varieties, yet there is no unified classification method, as it's challenging to find a distinguishing standard among the diverse types. Additionally, each manufacturer has its unique equipment and processes, leading to a wide range of product types. Classification is currently done according to general customs.
1. Categorized by the base material used, common base materials for organic coated steel plates include cold rolled steel, galvanized steel, electro-galvanized steel, alloy 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, with different coating methods such as roller coating, spray coating, powder coating, lamination, and printing. Depending on the number of coatings, there are single-coat and single-bake, double-coat and double-bake, triple-coat and triple-bake, and quadruple-coat and quadruple-bake processes. By pattern or printing processing, they can be further divided into wood grain, marble, leather grain, cement mortar, and other coated steel sheets.
3. Categorized by paint type, typically classified by paints used for organic coatings, including polyvinyl chloride coated steel plates, polyester coated steel plates, silicone polyester coated steel plates, etc.
4. Categorized 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, etc.
5. Categorized by special coatings and applications, including epoxy zinc-rich coatings, organic coated steel plates based on cold-rolled steel sheets, velvet-coated steel plates, and some special machine-coated composite plates such as wood film boards, sandwich panels, and vibration-resistant panels.
