Continuous casting or primary rolling slab is used as raw material, heated by stepping heating furnace, descaled by high pressure water and then fed into roughing mill.
Roughing material is fed into finishing mill after cutting head and tail, and then carried out computer controlled rolling. After the final rolling, it is cooled by laminar flow and coiler to become straight hair coil. The head and tail of straight hair coil are often tongue and fishtail, and the accuracy of thickness and width is poor. The side part often has defects such as wave shape, folding edge and tower shape. The coil is heavy and the inner diameter of the steel coil is 760mm. After cutting head, cutting tail, cutting edge, straightening, leveling and other finishing line treatment, cutting plate or rewinding, it becomes: hot rolled steel plate, flat hot rolled steel coil, longitudinal cutting tape and other products. Hot rolled finish roll is hot rolled pickling plate roll after pickling removing the oxide scale and oiling.
