The four-high rolling mill is a widely used equipment in the metal processing industry, primarily for rolling metal sheets, strips, and other materials to achieve the desired thickness, flatness, and surface quality. This type of rolling mill typically consists of two sets of rolling rolls, with two rolls at the top and two at the bottom, forming a four-roll working mode, hence its name, the four-high rolling mill. The design of the four-high rolling mill helps to better control the pressure distribution during the rolling process, improving rolling accuracy and efficiency while reducing roll wear and extending the service life of the equipment.