The machines of this kind is an automatic working equipment which is designed for processing screw thread on the blanks of rivets and lolts with heads.It fits for the mass production of tightening articles.

• 本机型是在带头部的螺钉、螺栓坯件上滚压螺纹的自动化加工设备，适用于紧固件的大批量生产。