The cold flying saw ia able to cut tubes with speeds up to 100m/min An automatic control system allows to optimize blade positioning according to the tube diameter and  thickness,setting the speed of feeding and rotation of the blades. This system is able to  increase the quality of the cut surface, no burr. In the work process eliminating mechanical  clearance, reduce the influence of cold cutting saw blade, saw blade small wastage, reduce  the production cost , improve the machine service life.