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Rebar Couplers

Bolted Rebar Coupler

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.

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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.


Product Specifications
ParameterKey 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

MaterialCarbon Steel ASTM 1045 (45#) / Alloy Steel ASTM 5140 (40Cr)
StandardComply 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 GradeBS 4449, B500, JG/T 163-2013, HRB 400, HRB 500, HRB600, ASTM A615 Grade 60/Grade 75
SizeSuitable for rebar size from 16mm to 32mm
Thread60⁰/ 75⁰
PackingWooden Case + Carbon Box
CustomizationCustomizing based on required major diameter, pitch of thread, minimum tensile strength and rebar strength


Size of Bolted Rebar Coupler
specificationOD(mm)ID(mm)L(mm)W T(mm)Weight (kg)Average Torque All Bolts(N-m)Number of Bolts(pcs)
10(#3)331512790.742056
12331512790.82056
14(#4)37191599
2056
16(#5)371915991.072056
184424191101.672058
20(#6)4424191101.672058
22(#7)4828273102.834010
25(#8)5430311124.0447510
286034311135.3947510
30(#9)6034311135.3947510
32(#10)653839613.57.4268010
34724339614.59.7775010
36(#11)724343014.510.6175012
38804743016.513.3379012
40804743016.513.3379012



Our Rebar Coupler for Mechanical Splicing
  • 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

OEM and ODM Service
  • 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.

Applications

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

Our Certificates
  • 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

Scientific Rigor, Quality Assurance

Every batch of rebar coupler can be traced and guaranteed, following lSO9001.

Production Process
  • Pattern(Tooling) Design

    Roud Bar

  • Wax Injection

    Tube Production

  • Shell Making

    Cutting

  • Dewaxing

    Chamfer

  • Shell Baking

    Machining OD

  • Pouring

    Threading

  • Shot Blasting

    Laser Marking

  • Heat Treatment

    Anti-Rust

  • Heat Treatment

    Package

  • Heat Treatment

    Shipping

  • We Have A Professional Team To Provide Design+ R&D+ Customization + Customer VlP Service

Inspection Process
  • 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

Why Global Customers Trust Tenjan Steel Tubes?

Vertical Integration Excellence in Steel Tube Manufacturing
Vertical Integration Excellence in Steel Tube Manufacturing Vertical Integration Excellence in Steel Tube Manufacturing

Vertical Integration Excellence in Steel Tube Manufacturing

One-Stop Precision Tube Production from Raw Material to Finished Product

Material Customization: Alloy Steel & Carbon Steel design & Certified billet sourcing

Integrated Production:Seamless piercing, cold drawing/rolling, heat treatment,Integrated ECT/UT Inspection

Full Process Traceability: Batch-tracked at every production stage
Certified Steel Tubes for Demanding Applications
Certified Steel Tubes for Demanding Applications Certified Steel Tubes for Demanding Applications

Certified Steel Tubes for Demanding Applications

Trusted Quality Backed by Global Standards

Quality Certifications:IATF 16949,ISO 9001,Third-party verified by SGS & TÜV

Material Compliance:ASTM (A519, A106, A179, A192) ,EN/DIN (10297, 2391,1629,10305) ,JIS (G3445/G3444)
Precision-Engineered Steel Tubes • Customized for Your Critical Applications
Precision-Engineered Steel Tubes • Customized for Your Critical Applications Precision-Engineered Steel Tubes • Customized for Your Critical Applications

Precision-Engineered Steel Tubes • Customized for Your Critical Applications

Customized Material Specification | Dimensional Precision | Profile Customization | Performance Enhancement | Flexible Volume Production

> Carbon & alloy steel grades,Custom chemical composition,Full MTC traceability
> OD: 10–108mm (0.39"–4.25") WT: 1–20mm (0.04"–0.79")
> Seamless round tubes,Cold-formed shapes((square, rect., hex. & others)
> Annealed/Normalized,Quenched & Tempered,Surface finishes:Pickled/Oiled
> Small batch: 5 tons MOQ
Total Steel Tube Solutions for Industry
Total Steel Tube Solutions for Industry Total Steel Tube Solutions for Industry

Total Steel Tube Solutions for Industry

Precision Tubes Engineered for: Auto Parts | Mechanical Parts | Agricultural Machinery | Mining Support & Construction | High-Pressure Systems

Technical Support Services: Design Consultation | Material Selection | Testing Validation

Value-Added Processing: Precision Cutting, Chamfering,OD/ID machining, Anti-rust oil, Custom Packaging
Learn More

Why Global Customers Trust Tenjan Steel Tubes?

Customizable Alloy and Carbon Steel Grades

Customizable Alloy and Carbon Steel Grades

We offer customizable alloy and carbon steel gra- des to match your project’s exact requirements.

Why settle for generic materials when we can align specifications directly to your application? By focusing on only what you need, we deliver superior cost efficiency without compromising quality—saving you time and resources.

Customizable Alloy and Carbon Steel Grades

Reliable Delivery Capacity

With an annual production capacity of 60,000 tons, we guarantee on-time delivery even for large-scale orders.

Our surplus capacity acts as a safety net, eliminating risks of bottlenecks or missed deadlines—critical for projects with strict timelines.

Customizable Alloy and Carbon Steel Grades

Complete Manufacturing Supply Chain

We offer customizable alloy and carbon steel grades (ASTM, EN, DIN, JIS) to ma- tch your project’s exact requirements.

• Advanced metalworking: Piercing, pickling, heat treatment & cold forming
• Precision verification: Dual NDT (Ultrasonic/Eddy Current) + material testing (Tensile/Chemical)
• 24/7 lab monitoring of 60+ parameters ensuring product consistency

Customizable Alloy and Carbon Steel Grades

Meet Regulatory Standards Compliance

IATF16949: Automotive-grade quality for precision parts.
TS (Pressure Pipe): Safety compliance for critical infrastructure (e.g., pipelines, boilers).
ISO9001: General excellence in process management.
Plus optional third-party validation (TÜV/SGS) for added credibility in regulated markets like aerospace, energy, or medical devices.

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