A "hot rolled steel coil" is a type of steel product that is produced by rolling steel at a temperature above its recrystallization temperature. This process allows the steel to be formed and shaped more easily, resulting in a product that is typically less expensive than cold rolled steel but has a rougher surface finish and less precise dimensional tolerances.
The production of hot rolled steel begins with heating steel slabs to a temperature that is above their recrystallization temperature, typically around 1700°F (930°C). The heated slabs are then passed through a series of rolling mills, which progressively reduce the thickness of the steel to the desired size. The final product is a steel coil that has been cooled and coiled for storage or transportation.