The steel plate is a flat steel with a wide aspect ratio and a large surface area.

The steel plate is a flat steel with a wide aspect ratio and a large surface area. Steel plates are divided into two specifications according to their thickness: thin plate and thick plate. 
    The steel sheet is a steel sheet having a thickness of between 0.2 and 4 mm produced by a hot rolling or cold rolling method. The width of the steel sheet is between 500 and 1400 mm. According to different applications, the steel sheets are rolled from different material billets. Commonly used materials are plain carbon steel, excellent carbon steel, alloy structural steel, carbon tool steel, stainless steel, spring steel and silicon steel for electricians. They are mainly used in the automotive industry, aviation industry, enamel industry, electrical industry, machinery industry and other departments. In addition to direct delivery after rolling, thin steel sheets are also pickled, galvanized and tin-plated. 
    Thick steel plate is a general term for steel plates with a thickness of 4mm or more. In actual work, steel plates with thickness less than 20mm are often referred to as medium plates, steel plates with thickness >20mm to 60mm are called thick plates, and steel plates with thickness >60mm are required to be specialized. It is rolled on a special plate mill, so it is called a thick plate. The width of the thick steel plate is from 0.6 mm to 3.0 mm. According to the application, the thick plates are divided into shipbuilding steel plates, bridge steel plates, boiler steel plates, high-pressure vessel steel plates, pattern steel plates, automobile steel plates, armor steel plates and composite steel plates. 
    One branch of the steel plate is a steel strip, which is actually a very long thin plate with a relatively small width and is often supplied in rolls, also known as strip steel. Steel strips are often produced on multi-stand continuous mills, which are cut into lengths and then steel strips, so productivity is higher than in the single sheet mechanism.