Sleeve is used to cold rolling recoiler curl is steelskin zone (generally the strip thickness is 1 mm Below), in order to prevent the steel strip rolled down to support. As shown in figure 1 Thick wall socket of process design is the most important process of material and heat treatment process,By selecting suitable materials and making reasonable heat treatment process, to ensure that the sleeve machine Machinery performance. Our company can according to user's steel belt width and thickness of plate and steel belt unit Stress design accord with the user to use the steel sleeve.