LOMAXStep 1. Bar preparation
The rebar is cut to length and the end is machined: it must be flat and perpendicular to the axis. This ensures full engagement and that the joint works over the full cross-section.
Step 2. Thread rolling
A thread is rolled on the end using a thread-rolling machine. The thread is formed by pressure, with no metal removal — the bar cross-section is not weakened. The profile and thread length match the coupler size.
Step 3. Joint assembly
The coupler is screwed onto the first bar, then the second bar is threaded in and tightened with a wrench to the stop. For positional and R/L couplers the bars aren't rotated — the joint is assembled by turning the body or the middle part.
Step 4. Inspection
Full engagement is checked (by marks/thread protrusion) and the tightening torque. Joints are sample-tested in tension — compliance with GOST 34278-2024. A certificate and reports are issued per batch.
To select the coupler type and equipment for your diameters — coupler catalog. For the differences between types, see the article threaded, conical and crimp.
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