The overall frame structure of the sendzimir 20 high rolling mill has the advantages of great rigidity, bearing the rolling force along the entire width of the rolling mill through the backing bearing, and therefore the longitudinal and lateral dimensional accuracy of the strip is high. Therefore, it has been widely used in the cold rolling industry. The 20-roll mill is suitable for strip processing of stainless steel, silicon steel, carbon steel, non-ferrous metals, etc. The equipment has the characteristics of high speed, stability, good surface quality, and good shape.