A rolling mill is a or used to shape and process by passing it between a pair of working rolls. The metal is passed between two tough numerous times, with the distance between the cylinders being decreased with each pass so the metal becomes thinner and thinner. Depending on the temperature of the metalworking application rolling mills are typically or rolling mills.

Hot rolling is a hot working metalworking process where large pieces of metal, such as slabs or billets, are heated above their recrystallization temperature and then deformed between rollers to form thinner cross sections.

Cold rolling is a metalworking process in which metal is deformed by passing it through rollers at a temperature below its recrystallization temperature.