TTS Taper Threaded System
REBARLINK™ TTS (Taper Threaded System) is a precision-machined taper-threaded mechanical rebar coupler system engineered for rapid 4-to-5 turn site engagement, self-aligning anti-cross-thread assembly and full bar-break structural capacity.
REBARLINK™ TTS is a taper-threaded mechanical rebar coupler system. Precision taper threads are cut directly onto the bar ends, and the coupler locks into full engagement in just 4 to 5 turns without requiring bar rotation tools or secondary lock nuts.
The REBARLINK™ TTS Taper Threaded System provides a high-efficiency mechanical splice for reinforced concrete structures. Using precision-machined taper threads, the TTS coupler engages with minimal rotation, achieves complete torque lockup quickly, and delivers positive load transfer for demanding civil, transportation and commercial applications.
What Is the TTS Taper Threaded System?
TTS stands for Taper Threaded System. The coupler is machined with taper threads at both ends, creating a mechanical butt splice of two sections of reinforcing steel. Once a taper thread is cut onto each prepared bar end, the coupler is spun on and tightened to a calibrated torque — giving a full-strength, self-aligning connection without cross-threading risk.
The system is designed to develop full bar strength in tension, compression and stress reversal. Application, performance and certification requirements should be verified against the applicable project specification and jurisdiction.
Taper Thread + Positive Torque Lock
Precision taper threads cut onto prepared bar ends, with a self-aligning coupler that locks to full engagement in 4 to 5 turns and is verified with a calibrated torque wrench.
- Precision taper-thread geometry
- Self-aligning, anti-cross-thread assembly
- Full bar-strength structural capacity
- Rapid 4-to-5 turn site engagement
- Calibrated torque verification
Performance & Engineering Characteristics
Full Bar-Strength Splice
A spliced bar behaves as a continuous length of reinforcing steel, providing full strength in tension, compression and stress-reversal applications.
Self-Aligning Taper Thread
The natural taper geometry guides the bar end into the coupler, preventing cross-threading and protecting connection quality during fast-paced site assembly.
Rapid 4-to-5 Turn Lockup
Taper threads engage and fully lock with minimal bar rotation, speeding installation without specialised rotating equipment.
Positive Torque Lock
Calibrated torque-wrench inspection confirms a fully locked, high-strength connection without needing secondary lock nuts.
Slim Coupler & Reduced Congestion
A compact outer diameter supports thorough concrete consolidation and helps reduce congestion in dense reinforcement cages.
Rapid Rebar Placing
Ideal for sliding and climbing formwork, where fast, reliable mechanical splices help keep construction cycles on schedule.
Quality & Compliance Indicators
Reinforcing steel mechanical splicing requirements and quality reference.
Mechanical splice application reference for reinforced concrete structures.
Complies with Chinese national standard GB/T 42796-2023, aligned with ISO 15835-1.
Complies with Chinese national standard GB/T 42901-2023, aligned with ISO 15835-2.
Complies with Chinese industry specification JGJ 107-2016.
Chinese construction engineering testing and technical conformity reference.
Digital identification and traceability information can support product origin, inspection and quality records.
Project-specific certification, test reports and compliance documentation should be confirmed according to the applicable product specification, project requirements and jurisdiction.
Typical Applications
Nuclear & Heavy Civil Works
Power station containment structures, heavy foundation mats and critical wall-to-column joints.
Bridges & Transportation
Highway viaduct piers, railway columns, tunnel linings and retaining structures.
Precast & Modular Construction
Precast segment connections, modular beam-column joints and high-density rebar cages.
High-Rise & Structural Concrete
Columns, core walls and congested reinforcement zones requiring controlled mechanical splicing.
Who Should Use TTS?
TTS is designed for projects that need fast, reliable and controlled mechanical splicing on site. It suits high-rise, infrastructure, bridge, industrial and precast construction when rapid field assembly and positive, cross-thread-free engagement are priorities.
High-Rise & Core Structures
Columns, cores and walls where fast, repeatable splices keep construction cycles moving.
Bridges & Infrastructure
Piers, decks, tunnels and retaining structures requiring dependable, full-strength connections.
Precast & Modular Assembly
Precast segments, modular joints and high-density rebar cages where engagement must be quick and certain.
Projects Needing Rapid Site Splicing
High-volume, schedule-driven sites that favour 4-to-5 turn assembly and controlled field installation.
TTS Rebar Coupler Installation Procedure
The TTS mechanical splice is installed through four controlled steps: cut, thread, inspect and assemble. Correct bar preparation and torque verification are essential for the specified connection performance.
Rebar Cutting
Cut reinforcing bar ends square to the required length and dimensional tolerance.
Thread Processing
Machine precision taper threads onto the prepared bar ends to match the internal taper of the coupler.
Thread Inspection
Verify taper thread quality and functional dimensions using calibrated inspection gauges.
Coupler Assembly
Spin the coupler into full engagement over 4 to 5 turns and verify lockup with a calibrated torque wrench.
The self-aligning taper thread engages in just 4 to 5 turns, eliminating cross-threading risk and helping construction teams complete splices quickly and reliably on site.
TTS Technical Specifications
Standard TTS couplers are available for reinforcing bar sizes from 12 mm to 40 mm. Customized dimensions and special project requirements can be evaluated by the REBARLINK™ engineering team.
| Rebar Size (mm) | Code | OD (mm) | L (mm) | Taper | Weight (kg) |
|---|---|---|---|---|---|
| 12 | TTS12 | 19.6 | 49 | 12° | 0.081 |
| 16 | TTS16 | 25.5 | 61 | 12° | 0.163 |
| 20 | TTS20 | 32.0 | 88 | 12° | 0.399 |
| 22 | TTS22 | 33.0 | 91 | 12° | 0.381 |
| 25 | TTS25 | 38.0 | 96 | 12° | 0.564 |
| 28 | TTS28 | 42.0 | 101 | 12° | 0.690 |
| 32 | TTS32 | 42.0 | 107 | 12° | 0.675 |
| 36 | TTS36 | 46.0 | 121 | 12° | 0.822 |
| 40 | TTS40 | 52.0 | 131 | 12° | 1.200 |
TTS Taper Threaded System FAQ
What is TTS?
TTS is the REBARLINK™ abbreviation for Taper Threaded System, a mechanical rebar coupler system using precision-machined taper threads cut directly onto the bar ends.
How does the TTS taper thread self-align?
The tapered thread geometry naturally guides the bar end into the coupler as it is rotated, aligning the connection and preventing cross-threading during assembly.
How many turns does TTS need to lock?
The TTS coupler achieves complete torque lockup in about 4 to 5 full turns, verified with a calibrated torque wrench.
Does TTS provide full bar-break performance?
TTS is engineered for 100% bar-break performance: under the applicable qualification and project test requirements, failure occurs in the reinforcing bar rather than at the mechanical splice.
What rebar sizes are available?
The current standard TTS product range covers reinforcing bar sizes from 12 mm to 40 mm. Customized solutions can be evaluated for project-specific requirements.
Is TTS self-aligning and does it reduce cross-threading?
Yes. The taper-thread geometry naturally guides the bar end into the coupler as it is rotated, aligning the connection and substantially reducing cross-threading risk during fast-paced site assembly.
How is TTS thread quality inspected?
Taper thread quality and functional dimensions are verified using calibrated inspection gauges, and lockup is confirmed with a calibrated torque wrench on site.
Is TTS suitable for high-rise and infrastructure projects?
Yes. TTS is used in nuclear and heavy civil works, bridges and transportation, precast and modular construction, and high-rise or congested structural zones requiring rapid, controlled mechanical splicing.
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