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Four Different Types of Rebar Mechanical Splices
#1 Coupler for Thread-Deformed Bar
This type of deformed bar comes with special bars with thread-like rolled deformations. These are assembled with lock nuts and threaded couplers, then the nuts are tightened to the specified torque.
#2 Upset Straight Thread Coupler
Upset Straight Thread Coupler is used to produce a full-length mechanical joint between reinforcing bars with upsetting ends. It can connect rebars of the same or different diameters laterally, vertically and slantingly. The coupler consists of a coupler with internal straight threads at each end that joins two upset end reinforcing bars with matching external threads.
#3 Non-upset thread Coupler
Non-upset thread Coupler consists of internal straight threads at each end that join two reinforcing bars with matching external threads. It is used to reduce the net cross-sectional area of the reinforcing bar. This type of splice comes in three pieces, the two bar ends, and the internally threaded coupler.
#4 Cold-Swaged Threaded Coupler
Cold-Swaged Threaded Coupler is made of seamless steel sleeves that are placed at the end of reinforcing bars. These are deformed onto the reinforcing bar profile to produce mechanical interlock. This consists of pre-threaded components, which are swaged onto the reinforcing bars using a swaging press with special dyes. Splicing of the bars is completed by installing one pre-threaded component into the other.