Nut Lock Upsetting Coupler

Description

Specifications

Aleono Upsetting Parallel Threaded Rebar Coupler is designed to produce a full strength mechanical joint between reinforcing bars with upsetting ends. It is used for rebar mechanical splicing in the concrete structure. It can connect re-bars of same or different diameters laterally, vertically and slantingly. It is broadly applied to the Tunnel, Tower, Bridge, Subway, Airport, Nuclear Power Station, High Rise Building and more. Aleono Parallel Thread Rebar Coupler including Standard Upsetting Coupler, Position Upsetting Coupler, Transition Upsetting Coupler and more.

Nut Lock Upsetting Coupler is designed to splice upsetting rebars which both sides completely cannot rotate. It consists of one standard upsetting coupler and one lock nut or one flared upsetting coupler with a lock nut. The main function of the nut is to meet the requirement of tightening torques and eliminate the residual deformation of the splice.

The Nut Lock Upsetting Coupler is mostly adopted under L Bars and Prefabricated Bar Cages where the rotation of a bar is impossible.

Technical Parameters

Product Advantage

Raw material-saving, high energy saving, high work efficiency.
Construction Environmental Protection. no flame, no noise pollution.
It is not be affected by the chemical compositions and types of reinforced bars and won’t be influenced by weather and work-site.
Low cost, simple operation.
Can be prefabricated and the construction period can be shortened.
High dimension precision, reliable quality and Stable performance.
High strength. The tensile strength usually more than 600 Mpa, it can reach 110% of yield strength of parent rebar.
After 2 million times of fatigue strength test, the connection is in good condition.
According to the inspection of National Construction Quality Supervision and Testing Center, the rebar coupler joint performance has reached the Grade I splicing rebar joint of JGJ107-2016 Industry Standard.

Raw Material

45# Carbon Steel

Chemical composition (%)	C	Si	Mn	Cr	Ni	Cu
	0.42-0.50	0.17-0.37	0.50-0.80	0.25	0.30	0.25
Mechanical property	Yield strength			Tensile strength
	355 Mpa			600 Mpa

Production Processes

Quality Control

Certificate:

Packaging

PP Woven Bags are used inside, Wooden Case is used outside. Products also can be packed according to customer’s special demands.

Protection

To prevent dust and debris into the rebar coupler, we suggest you protect the nut lock upsetting coupler with Protective Cap before you use it.

Operation

First of all, you should process thread on the upset rebar end.

Ensure these two upsetting rebar threaded sectors with right-handed thread and the same diameter.

The length of the shorter rebar threaded sector is the half length of the coupler,

the length of the longer rebar threaded sector is the full coupler length plus the full nut length.

(1) Cut the rebar end with the Rebar Sawing Machine, ensure the cut surface is flat.

(2) Enlarge the rebar end with the Rebar Upsetting Machine, ensure the upset end can meet the requirements of rebar thread processing, and the length of upsetting rebar end should be more than 1/2 of the coupler length.

(3) Cutting Thread on the upsetting rebar end with the Rebar Threading Machine.

Then splice the upset reinforcing bars.

(1) Prepare.

(2) Rotate the lock nut and coupler onto the longer rebar threaded sector.

(3) Shift the shorter rebar threaded sector, ensure two rebar thread end can be touched each other.

(4) Rotate the coupler and lock nut onto the shorter rebar threaded sector side. Then tighten the coupler and lock nut with torque spanner or socket wrench.