1, the coiling roundness deviation of iron plate is less than 0.5mm, and the lower roller of the coiler is lifted by hydraulic cylinder, which can not only ensure the smooth movement process, but also ensure the stable pressure in the coiling process, thus ensuring the constant distance between the lower roller and the upper roller, and the material deformation degree in the whole product molding process is -0.5mm, so the coiling roundness deviation of iron plate is less than 0.5mm.

2. Iron coil is a common metal product, usually made of zinc steel, stainless steel, aluminum and other materials. Its shape is cylindrical or arc, and its edge is curled. Iron plate coil has good toughness and durability, and can be used in various machinery, equipment and parts, such as making paint barrels, water tanks, inner walls of ovens, etc.