2015 new nail and screw making machine

fully automatic high speed screw bolt making machine price hot sale in alibaba

  nut bolt screw making machines

To produce bolt, two machines are necessary--Cold-heading Machine and Thread Rolling Machine:

1. Cold-heading Machine

To cut raw material wire according to length of finished bolt and form bolt head.

Main Technical Parameter: 

2.  Thread Rolling Machine

To roll thread on blank shank of bolt after being cold-headed.

Main Technical Parameter: 

picture of  nuts and bolts making machines

  nut bolt screw making machines

product of  nuts and bolts making machines