The leveling machine, also known as a straightening or flattening machine, is placed between the material rack (or cutting and welding machine) and the feeding machine for leveling and advancing the coil. It is a commonly used equipment in sheet metal processing. The design of the leveling machine primarily depends on the thickness, material, and requirements of the material to be leveled. Thicker materials require higher structural rigidity, fewer rollers, larger roller diameters, and greater power, while the opposite is also true.