A "cold rolled steel coil" is a type of steel product that is produced by rolling steel at room temperature, below its recrystallization temperature. This process results in a product that has a smooth surface finish and tighter dimensional tolerances than hot rolled steel. Cold rolled steel coils are commonly used in applications that require a high level of precision and a superior surface finish, such as automotive components, appliances, and furniture.
The production of cold rolled steel begins with hot rolled steel that has been pickled to remove scale and other impurities. The pickled steel is then rolled at room temperature through a series of stands to achieve the desired thickness and shape. The final product is a steel coil that has been work-hardened and annealed to achieve the desired mechanical properties.