Straightening rolls and decoilers are widely used in metal processing to straighten and coil materials such as sheet, strip and wire. Straightening rolls are special tools used to smooth and straighten the material. The material is fed through a series of rolls that are adjusted to bring the material to the desired width and thickness. The number and size of the rolls, as well as their position, can vary depending on the material and application. Unwinders are used to unwind materials from a roll so that they can be fed into further processing. The roll is mounted on an axle and the material is unwound from the roll and fed through the straightening rolls. The unwinders can be equipped with various features, such as tension control and guiding systems, to ensure that the material runs through the machine evenly and stably. The combination of leveling rolls and decoilers is common, as materials often need to be unwound from the roll and then fed through the leveling rolls to bring them to the desired width and thickness. The choice of suitable leveling rolls and decoilers depends on various factors, such as the type of material, the width and thickness of the material, and the production rate. It is important that the machines are coordinated and work together to ensure smooth production.