This machine is mainly used in compound stave, refining, mixing rubber, etc. Before the rollers is classics polished arc groove surface, after the rollers is classics polished surface, two serrated grooved rollers by cold hardcast irons, surface made hard wear-resisting, rollers for hollow internal, may use requirements, ventilation with saturated steam and cooling water is used to regulate the rollers surface temperature, two rollers to vary the pace relative rotation, make compound him into two roll gap by mechanical processing.

