Rebar Coupler

A standard rebar coupler is forged from high-quality 45# carbon steel or alloy steel with internal precision threads. Construction workers process external threads on both ends of steel bars, then screw the rebar into the inner cavity of the coupler to form a rigid whole force transmission structure.

Different from lap joints that rely on concrete bonding to transfer load force, the rebar coupler completes the force transmission purely through metal contact. Even if concrete cracks or deteriorates under long-term dynamic load, the connection strength of the rebar joint will not fail, greatly improving the anti-seismic and anti-fatigue performance of the building structure.

We divide common rebar couplers into four mainstream types based on thread structure and usage scenarios, covering almost all construction working conditions:

It is the most conventional rebar coupler for column, wall and beam steel bar docking. With uniform internal thread force bearing, simple processing and easy on-site inspection, it supports rebar specifications from 12mm to 40mm, which is the bulk product of most engineering procurement orders.

Designed for post-pouring belts, settlement joints and steel bar tension sections. Rotate the coupler to lock two steel bars synchronously without rotating the main reinforcement, greatly improving the construction efficiency of closed steel bar cages.

Realize the butt joint of rebars with different diameters (such as 25mm to 20mm), solve the connection problem of variable-diameter steel bars in foundation conversion layers and structural beam sections, avoiding complicated steel bar transition processing on site.

Used for high-load bearing parts such as bridge piers, subway main structures and hydropower dams. After overall quenching and tempering treatment, the tensile strength is more than 1.1 times the parent steel bar strength, meeting high-standard anti-seismic design requirements.