The Bolted Rebar Coupler System is a mechanical rebar splicing solution designed to replace traditional methods like welding or lap splicing. Its core function is to create a seamless, end-to-end connection between two reinforcing bars using a high-strength steel sleeve with internal threads and locking bolts. The primary value it offers is significant time savings, guaranteed quality, and reduced overall project costs. Our system is engineered to comply with international standards such as ISO 15835 and ASTM A193.
Structure & Working Principle
The system's effectiveness lies in its simple yet robust design, which consists of three key components: the High-Strength Steel Sleeve, Internal Threads, and Radial Locking Bolts.
The connection process is a simple three-step operation:
Step 1: Screw the coupler onto the pre-threaded end of one rebar.
Step 2: Insert the second rebar into the other end of the coupler.
Step 3: Tighten the external locking bolts with a standard wrench to complete the connection.
This dual-mechanism of threaded engagement and bolt locking ensures a connection strength that meets or exceeds the actual tensile strength of the rebar itself.
Key Advantages & Performance
◆Maximum Efficiency:
• Installation is up to 70% faster than welding.
• Eliminates the need for electricity, open flames, or special equipment, making it largely unaffected by weather conditions.
• Reduces dependency on highly skilled labor, simplifying on-site management.
◆Proven Performance:
• Achieves a connection strength of 125% of the rebar's specified tensile strength.
• Provides excellent fatigue and seismic performance, making it ideal for high-rise buildings and seismic zones.
• As a fully mechanical connection, it guarantees consistent quality, eliminating common risks associated with welding like cold welds or slag inclusions.
◆Economic Practicality:
• While the unit price may be higher, it leads to lower total project costs by saving on labor, time, and equipment.
• Versatile for various rebar diameters and perfect for congested reinforcement areas.
Typical Applications (Use Cases)
• High-Rise Buildings: Vertical rebar splicing in columns and shear walls.
• Infrastructure Projects: Rebar connections in bridges, tunnels, and utility tunnels.
• Industrial Construction: Foundations and equipment anchorage in power plants and chemical facilities.
• Emergency Repair & Prefabricated Elements: Ideal for rapid structural repair and connecting precast concrete elements.
Services from Tenjan (Our Services)
• Customized Solutions: We provide non-standard sizes and special materials (e.g., corrosion-resistant).
• Professional Technical Support: We offer end-to-end support, from design and selection to on-site installation guidance.
• Quality Assurance: All products come with complete Material Test Certificates (MTCs) and test reports.
• Global Supply: As a source factory, we support worldwide shipping with competitive pricing and flexible delivery schedules.
| Parameter | Key Features |
| Product Name | Rolling Straight Thread Rebar Coupler,Upsetting Parallel Thread Rebar Coupler,Cold Extrusion Press Rebar Coupler,Taper Thread Rebar Coupler,Customized Special Shape Rebar Coupler,Bolted Rebar Coupler |
| Material | Carbon Steel ASTM 1045 (45#) / Alloy Steel ASTM 5140 (40Cr) |
| Standard | Comply with Chinese standard JG/T 163-2013 Couplers for Rebar Mechanical Splicing, Amercian standard ACI318 ACI349, British standards BS8110, French standard NF35-20-1, German standard DIN1045, ISO 15835 and other relevant standards. |
| Used for rebar Grade | BS 4449, B500, JG/T 163-2013, HRB 400, HRB 500, HRB600, ASTM A615 Grade 60/Grade 75 |
| Size | Suitable for rebar size from 16mm to 32mm |
| Thread | 60⁰/ 75⁰ |
| Packing | Wooden Case + Carbon Box |
| Customization | Customizing based on required major diameter, pitch of thread, minimum tensile strength and rebar strength |
| specification | OD(mm) | ID(mm) | L(mm) | W T(mm) | Weight (kg) | Average Torque All Bolts(N-m) | Number of Bolts(pcs) |
| 10(#3) | 33 | 15 | 127 | 9 | 0.74 | 205 | 6 |
| 12 | 33 | 15 | 127 | 9 | 0.8 | 205 | 6 |
| 14(#4) | 37 | 19 | 159 | 9 | 205 | 6 | |
| 16(#5) | 37 | 19 | 159 | 9 | 1.07 | 205 | 6 |
| 18 | 44 | 24 | 191 | 10 | 1.67 | 205 | 8 |
| 20(#6) | 44 | 24 | 191 | 10 | 1.67 | 205 | 8 |
| 22(#7) | 48 | 28 | 273 | 10 | 2.8 | 340 | 10 |
| 25(#8) | 54 | 30 | 311 | 12 | 4.04 | 475 | 10 |
| 28 | 60 | 34 | 311 | 13 | 5.39 | 475 | 10 |
| 30(#9) | 60 | 34 | 311 | 13 | 5.39 | 475 | 10 |
| 32(#10) | 65 | 38 | 396 | 13.5 | 7.42 | 680 | 10 |
| 34 | 72 | 43 | 396 | 14.5 | 9.77 | 750 | 10 |
| 36(#11) | 72 | 43 | 430 | 14.5 | 10.61 | 750 | 12 |
| 38 | 80 | 47 | 430 | 16.5 | 13.33 | 790 | 12 |
| 40 | 80 | 47 | 430 | 16.5 | 13.33 | 790 | 12 |

Upsetting Parallel Thread Rebar Coupler

Rolling Straight Thread Rebar Coupler

Cold Extrusion Press Rebar Coupler

Bolted Rebar Coupler

Taper Thread Rebar Coupler

Customized Special Shape Rebar Coupler
1.Raw Material CustomizationOwing the entire seamless steel tube production line, Tenjan can customize rebar couplers starting from tube production according to requirement.
2.Coupler Breaking Force CustomizationBased on being an expert in material properties, Tenjan can design the rebar coupler breaking force based on the rebar standard and grade to save the overall cost for customer.
3.Standards ComplianceIn compliance with ACl318, JGJ107, UBC 1997,BS8110, NF35-20-1,DIN1045,ISO 15835.
4.Size CustomizationDesign and customize according to customers' required major diameter, pitch of thread, Length.
Tenjan Rebar Couplers are widely used in nuclear power plants, sea-crossing bridges, water conservancy dams, buildings, etc. Exported to over 20 countries across six continents, and have been consistently trusted by global customers.

Hangzhou Bay Bridge

Indonesia Jatigede Dam

Pakistan Kohala Hydropower Station

Penang Second Bridge, Malaysia

Russian Federation Tower

Zemun-Borca Bridge, Serbia

TUV Test for the seamless steel tube(the raw material of rebar coupler)

SGS Testing Report(Tensile Test-Slip Test)

Certificate-of-Approval

ISO-certificate-of-Conformity
Every batch of rebar coupler can be traced and guaranteed, following lSO9001.




Roud Bar

Tube Production

Cutting

Chamfer

Machining OD

Threading

Laser Marking

Anti-Rust

Package

Shipping

We Have A Professional Team To Provide Design+ R&D+ Customization + Customer VlP Service
1
Raw Materia Identification &Traceability
2
Seamless Steel Tube Inspection
3
Seamless Steel Tube Tensile Strength Testing
4
In-process Size Checking
5
Coupler Breaking Force Testing
6
Coupler Threading Checking(WITH GO & NO-GO GAUGE)
7
Finished Coupler Size Checking
8
Finished Coupler Surface Checking
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