A shearing line is a production line used for cutting or shearing metal sheets or other materials into specific sizes and shapes. It typically consists of a series of machines, such as a decoiler, straightener, feeder, and shear, that work together to process the material. The shearing line can be automated, with the use of computer programs and sensors, to ensure consistent and accurate cutting. Shearing lines are commonly used in the manufacturing of metal products, such as automotive parts, appliances, and construction materials.