I. Overview
The Rebar Bending Testing Machine is a specialized machine engineered to execute precision cold bending and plane reverse bending tests on steel reinforcement bars (rebar), ensuring adherence to the highest standards:
ISO 6935-2:2019 Steel for the Reinforcement of Concrete - Part 2: Ribbed Bars
ISO 10065:1990 Steel Bars for Reinforcement of Concrete - Bend and Rebend Tests
GB/T 1499.2-2018 Steel for the Reinforcement of Concrete - Part 2: Hot Rolled Ribbed Bars
YB/T 5126-2003 Test Methods for Bending and Reverse Bending of Steel for Reinforced Concrete
This machine offers the capability to perform 180° bending tests (cold bending) and plane reverse bending tests (i.e., bending 90° forward, then rebending 20° backward), ensuring compliance with the rigorous standards mentioned above.
It is the quintessential tool for steel manufacturers and construction units to accurately assess the bending and reverse bending attributes of rebar.
The machine is distinguished by its compact and robust design, user-friendly angle display, straightforward operation, hassle-free maintenance, steady performance, and uncompromised safety.
II. Installation
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III. Technical Parameters
Parameter |
Specification |
Applicable rebar diameter |
φ6-φ40 mm |
Forward bending angle |
0-180°, freely adjustable |
Reverse bending angle |
0-180°, freely adjustable |
Working disc rotation speed |
≤ 20°/second |
Motor power |
1.5 kW |
Machine dimensions (mm) |
960 × 830 × 1230 |
Power supply |
380V, 50Hz |
Machine weight |
700 kg |
IV. Main Structure Components of the Machine
- Braking motor
- Cycloidal pinwheel reducer
- Working plate
- Clamping device
- Reverse bending device
- Machine frame
- Working table
- Working shafts and bending dies
- Electrical system
Packing List
Packing List
No. |
Item Description |
Quantity |
Remarks |
1 |
Main Unit |
1 set |
|
2 |
Product User Manual & Packing List |
1 copy each |
|
3 |
Product Certificate of Conformity |
1 copy |
|
4 |
Working Shaft Φ25 |
1 pc |
|
5 |
Working Shaft Φ42 |
3 pcs |
Pre-installed on the main unit |
6 |
Reverse Bending Clamping Device |
1 set |
Pre-installed on the main unit |
7 |
Long and Short Lead Screws |
1 each |
Long screw pre-installed on main unit |
9 |
Mandrels (for HRB400) |
See below |
Used for reverse bending test |
Mandrel Specifications (for HRB400 steel bars):
- 5 × Φ6 (Φ30) 4 × Φ6 (Φ24)
- 5 × Φ8 (Φ40) 4 × Φ8 (Φ32)
- 5 × Φ10 (Φ50) 4 × Φ12 (Φ48)
- 5 × Φ12 (Φ60) 4 × Φ14 (Φ56)
- 5 × Φ14 (Φ70) 4 × Φ16 (Φ64)
- Delve into the precision of 5 × Φ16 (Φ80) or the robust design of 4 × Φ18 (Φ72), crafted meticulously for superior performance.
- Discover the engineering excellence of 5 × Φ18 (Φ90), alongside the reinforced strength of 4 × Φ22 (Φ88), engineered for high durability.
- Experience the unyielding strength of 5 × Φ20 (Φ100), accompanied by the formidable capacity of 5 × Φ28 (Φ140), designed for demanding applications.
- Embrace the advanced technology of 5 × Φ22 (Φ110) paired with the powerful capabilities of 5 × Φ32 (Φ160), ensuring unparalleled efficiency.
- Step into the realm of innovation with 5 × Φ25 (Φ125), complemented by the exceptional force of 5 × Φ36 (Φ180), perfected for precise results.
- Explore the superior performance of 6 × Φ28 (Φ168), coupled with the astounding strength of 5 × Φ40 (Φ200), setting new standards in testing.
- Uncover the remarkable prowess of 6 × Φ32 (Φ192), a testament to our commitment to quality and precision.
- Witness the exceptional capability of 6 × Φ36 (Φ216), crafted to deliver outstanding performance every time.
- Experience the ultimate in testing excellence with 6 × Φ40 (Φ240), a cutting-edge solution for all your material strength assessments.

With a rich legacy of over 20 years in the testing equipment industry, Jinan Nake Test Equipment Co., Ltd., also known as the NAKE Group, is a beacon of innovation and precision. We boast a dynamic team of more than 20 dedicated R&D specialists, over 50 adept production staff, and a committed after-sales team of 10+. Our advanced facilities, sprawling over 4,000 square meters, are a testament to our excellence and are recognized as a National High-Tech Enterprise in China.
Our unwavering dedication to quality is exemplified by our ISO 9001:2015-certified management system that ensures meticulous oversight at every production phase. By sourcing a substantial 5,000 tons of raw materials annually and executing in-house machining and assembly, we secure a remarkable 3% cost advantage in manufacturing compared to industry counterparts, while unwaveringly delivering unmatched product consistency and excellence.
In the last five years, our commitment to excellence and precision is reflected in our remarkable on-time shipment rate of over 98.2%, a commendably low product failure rate of less than 0.3%, and a minor rework rate under 0.28%. Our capability to provide OEM manufacturing services to over 20 Chinese exporters, yielding approximately 600 units of mechanical testing equipment annually, further emphasizes our domain leadership and unwavering commitment to top-tier quality.
Our brand, NAKE Test Equipment, stands as a hallmark of reliability and innovation across China and beyond, with a global footprint extending to over 30 countries. As a direct manufacturer, we excel with our independent R&D and production capabilities, offering unparalleled benefits in technical know-how, bespoke product customization, and exceptional cost efficiency, setting us apart from mere distributors and intermediaries.




After-Sales Service Introduction:
1. Enjoy the peace of mind that comes with our comprehensive one-year product warranty, ensuring your investment is safeguarded.
2. Benefit from our commitment to innovation with permanent free software updates, keeping your rebar bending testing machine at the cutting edge of technology.
3. Experience seamless operation with our unwavering commitment to lifetime maintenance services, ensuring your equipment functions at its optimal performance.
4. Take advantage of our convenient remote video guidance service, providing expert assistance and troubleshooting whenever you need it, right at your fingertips.
1. Is your company a manufacturer or a trading company?
We are a professional manufacturer of materials testing equipment with independent R&D, production, and assembly capabilities. All core components are machined and assembled in-house, ensuring superior quality control, production efficiency, and cost management. Compared to distributors or intermediaries, we offer greater technical expertise, product customization, and competitive pricing.
2. How do you ensure product quality?
We implement strict quality control measures:
ISO 9001:2015-certified quality management system ensures process stability.
In-house machining and assembly of key components guarantee consistency and reliability.
Over the past five years, our product failure rate has remained below 0.3%, with a rework rate under 0.28%, significantly outperforming industry averages.
3. What is your typical lead time?
With an efficient production system, we have achieved an on-time delivery rate exceeding 98.2% over the past five years. Lead times vary based on order volume and product type:
Standard models: 15-30 days
Customized products: Lead time depends on design complexity
4. Do you offer OEM or ODM services?
Yes, we provide OEM manufacturing services for 20+ Chinese exporters, producing approximately 600 units of testing equipment annually. We offer custom branding, software interface modifications, and functional upgrades to meet client requirements while ensuring compliance with international standards.
5. What industries are your testing machines used in?
Our testing equipment is widely applied in various industries, including:
Metals & composites
Rubber & plastics
Construction & civil engineering
Aerospace & automotive manufacturing
Research institutes & university laboratories
6. What after-sales services do you provide?
We offer comprehensive after-sales support, including:
Remote technical assistance: Installation guidance, troubleshooting, and maintenance support via phone, email, or video.
On-site services (available in select regions): Professional engineers can provide installation training and repair services if needed.
Spare parts supply: Long-term availability of original factory parts to ensure stable equipment operation.
Equipment upgrades & software updates: Functional upgrades and software optimizations as per customer needs.
7. How can I request a quote or place an order?
You can contact us through:
Phone/Email Inquiry: Provide your specific requirements, and our sales team will respond within 24 hours.
Custom Solutions: If you have special testing needs, our engineering team can offer tailored solutions and detailed quotations.
8. What are your competitive advantages over industry peers?
Full in-house production for superior quality control: Key components are machined in-house, ensuring consistency and durability.
Manufacturing cost advantage: Our optimized supply chain results in a 3% lower production cost compared to industry averages, providing a cost-effective solution for customers.
Exceptional delivery performance: 98.2%+ on-time delivery rate, ensuring smooth project execution.
Global market experience: Products exported to 30+ countries, meeting multiple international standards.