Product Name: High Speed Automatic Bolts and Screws Thread Rolling Machine Model NO.: CY model Color: Customized Output: 100-300 PCS/Min Trademark: Rainbow Transport Package: Into Container or Wooden Case Specification: M3-M20 screw or bolt Origin: China Product Description Machine FeaturesThread Rolling Machines used for producing screws, bolts and tools. Thread rolling is a cold-forming operation only for external screws threads in a blank. The blank is pressed by thread rolling dies which are attached to the thread rolling machine.Modern thread and profile rolling offers many advantages in the production of a wide range of solid and hollow components, compared to traditional metal cutting methods. Threads and profiles are stronger, consistently accurate and there is no swarf. When solid components are produced, the form is rolled from a blank with a smaller diameter than the finished piece; With hollow products the starting diameter can usually be maintained or allowed to increase as required. SpecificationPackageExhibitions in 2019We can supply thread rolling machine for threading diameter 3-30mm screw and bolts. If you have question, pls feel free to contact me.