I. Overview
The Rebar Bending Testing Machine is a specialized machine engineered to execute precise cold bending and plane reverse bending tests on steel reinforcement bars (rebar). It adheres to stringent international standards to ensure top-tier accuracy:
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 is adept at executing 180° bending tests (cold bending) with precision and plane reverse bending tests (e.g., a 90° forward bend followed by a rebend of 20° in the opposite direction), in strict alignment with the aforementioned standards.
It stands as an indispensable tool for steel manufacturers and construction units alike to rigorously assess the bending and reverse bending properties of rebar, ensuring compliance and quality.
The machine boasts a compact and robust structure, a user-friendly angle display, effortless operation mechanics, straightforward maintenance routines, smooth and reliable performance, and enhanced safety features.
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)
- Precision-crafted specifications: 5 units of Φ16, perfectly matched with 4 units of Φ18, all set in an arrangement of Φ80 and Φ72 respectively.
- Exquisite configuration: Experience the synergy of 5 units at Φ18 with 4 units at Φ22, composing an ideal structure of Φ90 and Φ88.
- Engineered excellence: 5 units at a precise Φ20 join forces with 5 units at Φ28, forming an impeccable structure of Φ100 and Φ140.
- Optimized dimensions: 5 units of Φ22 alongside 5 units of Φ32, creating a robust and reliable framework of Φ110 and Φ160.
- Supreme engineering: 5 units of Φ25 coupled with 5 at Φ36, intricately designed for a configuration of Φ125 and Φ180.
- Advanced composition: 6 units at Φ28 in harmony with 5 units at Φ40, each contributing to a sophisticated Φ168 and Φ200 structure.
- Streamlined design: 6 expertly crafted units at Φ32, thoughtfully designed for a structure measuring Φ192.
- Enhanced specifications: 6 units at Φ36, skillfully arranged to create a structure of Φ216.
- Peak performance: A meticulous arrangement of 6 units at Φ40, delivering unmatched stability with a structure of Φ240.

As a vanguard in the realm of testing equipment, NAKE Group stands tall with an illustrious legacy of over two decades. Our unwavering dedication is powered by an elite team of more than 20 R&D wizards, a brigade of over 50 seasoned production experts, and a stellar after-sales service contingent exceeding 10 members. Encompassing more than 4,000 square meters of cutting-edge manufacturing and office spaces, we proudly carry the badge of a National High-Tech Enterprise in China.
Aligned with the ISO 9001:2015-certified quality management system, we exert meticulous precision at every phase of production. By procuring an impressive 5,000 tons of raw materials annually and harnessing our robust in-house machining and assembly prowess, we secure a commendable 3% manufacturing cost edge over our industry counterparts, all while ensuring unwavering product excellence.
In the last five exhilarating years, we have maintained a remarkable on-time shipment rate surpassing 98.2%, a minuscule product failure rate under 0.3%, and an incredibly low rework rate below 0.28%. These metrics affirm our relentless pursuit of precision, dependability, and unrivaled quality. Further solidifying our dominance, we extend OEM manufacturing prowess to over 20 Chinese exporters, crafting approximately 600 mechanical testing marvels annually.
Our brand, NAKE Test Equipment, commands widespread acclaim across China and beyond, with our innovations reaching over 30 countries globally. As a direct manufacturer with autonomous R&D and production capabilities, we provide unparalleled benefits over distributors and intermediaries through our technical excellence, bespoke product solutions, and cost-effective services.




After-Sales Service Introduction:
1. Enjoy peace of mind with our comprehensive one-year product warranty, ensuring you are covered for any unforeseen issues.
2. Benefit from our commitment to innovation with perpetual, complimentary software updates, ensuring your equipment remains at the cutting-edge.
3. Experience the assurance of everlasting maintenance services, designed to keep your machine operating at peak efficiency throughout its lifespan.
4. Access expert support anytime with our remote video guidance, offering real-time solutions and assistance at your convenience.
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.