Threading Machines

Threading Machines for Rebar and Pipe

Threading cuts a screw thread onto the end of a bar or pipe so it can join with a coupler or fitting. In rebar work, threaded couplers join two bars end to end with full strength, with no lapping and no wasted steel. For pipe work, clean threads mean leak free joints. A threading machine cuts these threads fast and to a consistent size, which hand dies cannot match on volume work.

HMS supplies threading machinery to contractors and fabricators across South India.

What a Threading Machine Does

A Threading Machine grips the bar or pipe and turns it against a cutting die, or turns the die head against a fixed bar. The die cuts a clean, uniform thread to a set length. The machine controls the depth and pitch, so every thread matches the coupler it goes into. The Threading Machine starts around ₹95,000. Price depends on the size range and features. Contact HMS for the current price.

Where Threading Is Used

• Rebar couplers. Join bars end to end at full strength, no lap length wasted.
• Column and slab continuity. Mechanical splices where lapping is hard.
• Pipe joints. Threaded ends for plumbing and water lines.
• Prefab and precast. Bars that must connect on site.

Threading Rebar the Right Way

A coupler joint is only as good as the thread. A bad thread means a weak joint. Get the basics right.

Square the Cut First

The bar end must be cut square before threading. A slanted end gives a partial thread that does not seat in the coupler. Cut clean, then thread.

Match Thread to Coupler

The thread pitch and length must match the coupler. Set the machine for the bar diameter and coupler type you are using. Test the first piece in a coupler before running the batch.

Use Coolant

Cutting oil or coolant keeps the die cool and gives a clean thread. A dry cut tears the thread and wears the die fast.

Care and Maintenance

• Keep the dies sharp. Worn dies give rough, undersized threads.
• Top up and clean the coolant. Dirty coolant clogs the cut.
• Clear chips and swarf from the work area after each batch.
• Check the chuck and jaws grip firmly. A slipping bar ruins the thread.
• Service the gearbox and motor as per the manual.

Threading pairs naturally with the rest of your bar yard. Straighten, cut, bend and thread, each step feeding the next. A good thread also speeds up the steel fixers, since couplers go together fast and need no inspection of lap lengths. HMS stocks dies and spares and helps you set up for the right coupler. Call us for current pricing and the right machine for your bar range.