Steel coils are large rolls of steel that are produced during the manufacturing process. They are made by rolling steel sheets into a coil shape, which makes them easier to transport and store. These coils can vary in thickness and width, depending on their intended use in industries such as construction, automotive, and appliances. Once produced, steel coils can be further processed into various products, including steel sheets, strips, and plates. They are often used in the production of building materials, machinery, and consumer goods, making them a vital component in many sectors of the economy.