25mm Cold Forged Parallel Threaded Coupler

Description

SLDI-FRGD is the most widely used form of coupler for rebar splicing in Civil Construction projects. Unlike inclined or tapered couplers, which require high precision, skill, and constant supervision, it has straight threads and is very quick and easy to install. It qualifies ACI 318 and BS 8110 requirements for mechanical splicing.

In forged type of threading, the cross-sectional area of the rebar does not reduce, as it does in rolled or tapered threading. The density of the rebar is increased by applying lateral forces at the tip of the rebar. Threading is then processed, and hence there is no reduction in the diameter of the rebar.

Operations Couplers

Manufacturing of couplers is done on CNC machines in our fully mechanized factory and will be sent readymade as per requirement.

Threading to Rebar

Threading onto the rebar is done at the project site with our machineries installed and operated by SLDI. It involves:

Forging/Upsetting Rebar

In this operation, a lateral force is applied at the tip of the rebar, which in turn increases its density and diameter.

Threading

After forging, the rebar is threaded to the specified pitch on a threading machine.

Features

• Easy to install parallel threading.
• No reduction in rebar diameter.
• Tensile strength is more than lap splices.
• Less supervision; even a hand-tightened joint is safe.
• Rebar threads are straight and will pass Go & No-Go Ring Gauge test.
• Qualifies Type-II Coupler requirement.
• Good for structures undergoing inelastic deformations during an earthquake.