strip of steel rolled directly by a roll to a certain thickness and rolled by a winder at normal temperature. Often used in the steel industry, as opposed to hot rolled coil. It refers to the steel strip which is rolled into a certain thickness directly by a roll and rolled into a whole roll by a winder at normal temperature. Compared with hot rolled coil, cold rolled coil surface bright, high finish, but will produce more internal stress, often after cold rolling annealing treatment.