Cold rolled (CR)

Cold rolled steel is a mill product produced from a hot-rolled pickled coil that has experienced substantial cold reduction at room temperature. The usual end product is characterized by improved surface, greater uniformity in thickness, and improved mechanical properties as compared with hot-rolled sheet. The length of steel sheet increases proportional to the reduction of thickness which increases the strength up to 20%. As a result, it is not suitable to certain applications where ductility is important issue. In order to soften the steel, the steel must go through heat treatment process called Annealing. It involves heating a material to above its critical temperature, maintaining a suitable temperature, and then cooling. Annealing can induce ductility, soften material, relieve internal stresses, refine the structure by making it homogeneous, and improve cold working properties. The modern rolling mill is capable of reducing the steel thickness from
1.80 mm to 0.14 mm.

Cold rolled steel is the main raw material for many industries such as automobile industry which use cold rolled steel for roof and hood. Other applications include steel furniture, electrical appliances, steel pipe and substrate for other products such as
● Galvanized Steel           ● Electro Galvanized Steel           ● Al-Zn Steel Alloy
● Pre-Paint Steel               ● Shearing and Slitting