Aluminum coil can be produced from aluminum ingots or other forms of raw aluminum (called cold rolling or direct cast) or from a smelting process directly through rolling (called continuous cast). These sheets of rolled aluminum are then rolled up, or coiled, around a core. These coils are densely packed, making them easier to ship and store when compared to aluminum in sheet form. Coil is used to manufacture an almost unlimited range of components used in an extensive number of industries.