Cold-rolled strips are widely used, such as automobile manufacturing, electrical products, locomotives and vehicles, aviation, precision instruments, canned food, etc. Cold-rolled sheet steel is the abbreviation of common carbon structural steel cold-rolled sheet, also known as cold-rolled sheet, commonly known as cold-rolled sheet, sometimes miswritten as cold-rolled sheet. The cold plate is a hot rolled strip of common carbon structural steel. After further cold rolling, the cold plate with thickness less than 4 mm is made. Because there is no oxide scale produced during rolling at room temperature, the surface quality of cold plate is good and the dimension accuracy is high. In addition to annealing treatment, the mechanical and technological properties of cold plate are superior to those of hot rolled thin plate. It has been gradually replaced by hot rolled thin plate in many fields, especially in the field of household appliances manufacturing.