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Help CenterSingle Ring Box Wrench With 1-Year Warranty, Heat Treated Cr-V Steel, Full Hardness Test Report Included
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Cangzhou Dean Safety&Special Tools Co.,Ltd – a trusted manufacturer since 2001 with annual export value exceeding US$100 million – presents our premium Single Ring Box Wrench, engineered for professionals who demand reliability and precision. Crafted from heat treated chrome vanadium steel and accompanied by a full hardness test report, this wrench delivers consistent performance under heavy torque applications. Our rigorous quality control ensures every tool meets the highest industrial standards, making it the ideal choice for mechanics, maintenance teams, and assembly lines worldwide. With a 1-year warranty and decades of manufacturing expertise, we guarantee a tool that will serve you reliably in every critical fastening task.
The Single Ring Box Wrench is specifically designed to provide a firm grip on hex nuts and bolts, especially in tight and confined spaces where a standard open-end wrench cannot reach. The 12-point box end allows for quick repositioning and less effort to loosen or tighten fasteners. Our heat treatment process significantly increases the steel's tensile strength and wear resistance, ensuring the wrench maintains its shape even under repeated high-torque use. Each wrench comes with a full hardness test report, available upon request, to verify consistency and compliance with your specific application requirements.
Key Features & Technical Specifications
- Material: Premium Chrome Vanadium Steel (Cr-V) – superior strength and corrosion resistance.
- Heat Treatment: Controlled quenching and tempering process for optimal hardness (typical HRC 42-48) and toughness.
- Full Hardness Test Report: Provided with every batch – transparency and quality assurance you can trust.
- 12-Point Box End: Enables easy indexing over fasteners, reducing the need to reposition the wrench.
- One-Piece Forged Construction: No welded joints – monolithic design for maximum torque transmission.
- Polished Finish: Rust-resistant surface with easy-clean texture.
- 1-Year Warranty: Covers manufacturing defects – peace of mind for your investment.
- Customizable Size Range: Available in metric (6mm – 50mm) and inch (1/4" – 2") sizes, with special sizes on request.
| Parameter | Specification |
|---|---|
| Hardness (after heat treatment) | HRC 42 – 48 (verified by test report) |
| Torque capacity (typical) | Up to 180 Nm (depending on size) |
| Surface finish | Mirror polished or matte (optional) |
| Weight (for typical 13mm size) | Approx. 85g |
| Packing | Single blister card / bulk / customized |
| Applicable standards | DIN 3113 / ASME B107.100 (comparable) |
Advantages for Your Application
- Enhanced Durability: Heat treated Cr-V steel resists deformation and breakage even under repeated high-torque use.
- Complete Traceability: The included full hardness test report provides documented proof of quality – essential for certified workshops and maintenance audits.
- Space-Efficient Design: The single ring box geometry works perfectly in confined engine compartments, machinery panels, and pipe flanges.
- Reduced Worker Fatigue: The balanced weight and ergonomic shape allow comfortable handling during extended tasks.
- Global Compatibility: Sizes comply with both metric and imperial fastener standards – suitable for equipment from any origin.
- Risk-Free Investment: 1-year warranty and factory-direct support ensure you are covered long after purchase.
Why Choose Cangzhou Dean Safety&Special Tools?
Since 2001, Cangzhou Dean has grown into a premier manufacturer with an annual export value exceeding US$100 million. We serve diverse markets across North America, South America, Europe, Asia, Africa, and Oceania, shipping from major ports like Tianjin, Shanghai, and Ningbo. Our in-house heat treatment and testing facilities allow us to deliver tools that meet the strictest quality benchmarks – every batch is subject to hardness verification, and reports are maintained for full traceability. With over two decades of experience and a dedicated global distribution network, we are confident that our Single Ring Box Wrench will exceed your expectations. Contact us today to request a sample, custom size, or bulk quotation – experience the reliability of Dean tools firsthand.
Frequently Asked Questions (FAQ)
1. Is the hardness test report available for every wrench?
Yes, we provide a full hardness test report for each production batch. Individual reports for specific wrenches can be issued upon request during order confirmation.
2. What is the typical hardness range of your heat treated Cr-V steel?
Our standard hardness is HRC 42–48, which offers an optimal balance of strength, wear resistance, and toughness. The actual values are documented in the test report.
3. Does the 1-year warranty cover breakage during normal use?
Yes, the warranty covers manufacturing defects such as material flaws or improper heat treatment. It does not cover misuse or intentional damage. Please refer to our warranty policy for details.
4. Can I get custom size wrenches (e.g., 55mm or 2-1/4")?
Absolutely. We offer customization on sizes, packaging, and surface finish. Minimum order quantities may apply for non-standard sizes.
5. What is the difference between a ring box wrench and a combination wrench?
A single ring box wrench has only a closed (box) end, which provides full 360° grip on fasteners and allows for higher torque without slipping. It is ideal for restricted spaces. Combination wrenches have both open and box ends for versatility.
6. How is the wrench packaged for export?
Standard packaging includes individual blister cards or bulk packing in cartons. Custom branding and packaging (e.g., peg hooks, PVC bags) are available upon request.
7. Do you test each wrench before shipping?
We perform routine hardness tests on samples from each production batch. For large orders, additional dimensional and torque tests can be arranged as per your quality agreement.
8. What are the shipping options and lead time?
We ship from Tianjin, Shanghai, or Ningbo ports. Lead time is typically 15–30 days depending on order volume and customization. Express delivery is also available for sample orders.
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