low noise nail and screw making machines

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.

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2.  Thread Rolling Machine

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

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  nut bolt screw making machines

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