This cold-roll mill is unique-designed, which can be used for producing kinds of tube and pipe such as carbon steel, alloy steel, stainless steel, non-ferrous steel, rare metal and precision alloy metal etc. thin-well tubes. Adopted circular pass design for the two rollers, The mill features big OD and WT reduction, long working distance, which made the mill more efficiency. Utilizing mechanical rotation system, The working status of the mill appears more reliable and steady during working.