Continuously annealed coils, typically referring to cold-rolled carbon steel coils processed through a continuous annealing line, are a highly common material in industrial applications. These coils offer excellent surface quality and uniform microstructure, ensuring superior mechanical properties and consistent quality. Additionally, the annealing process relieves internal stresses in the steel, reducing the risk of deformation and cracking during subsequent processing. The 20Cr13 stainless steel continuously annealed coil is a martensitic stainless steel material that exhibits good hardness and corrosion resistance. 20Cr13 stainless steel continuously annealed coils are widely used in fields requiring wear resistance and corrosion resistance, such as the manufacture of cutlery, medical instruments, springs, valves, and certain chemical equipment.