It is suitable for rolling reinforcement on large area, long shape and round sheet or pressing bone at the occlusal position. It is very suitable for rolling reinforcement on sheet pipe material, and Pittsburgh connection of rectangular sheet pipe, and pressing bone after thin plate round barrel buckling bone butt. Customers can choose and purchase models or make special orders according to the width, thickness, shape of tendons, processing buckler bone butt or Pittsburgh connection and other actual use requirements.