http://www.pft-cncmachining.com/sheet-metal-fabrication/ Product Introduction "The advantage of spinning processing is that the equipment and die are relatively simple (lathe can be used instead of special spinning machine when there is no special spinning machine). In addition to forming the rotating body composed of cylindrical, conical, or other curves, it can also process rotating parts with quite complex shapes. With the production needs of aircraft, rockets and missiles, thinning spinning has been developed on the basis of ordinary spinning (also knowhining.com/sheet-metal-fabrication/