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Help CenterOffset Construction Box Wrench, 45# Steel, 320 mm Length, 36 mm Opening,Offset Box End Structural Box Wrench
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Introducing the Offset Construction Box Wrench – a precision tool engineered for demanding structural applications. Manufactured by Cangzhou Dean Safety&Special Tools Co., Ltd., a trusted manufacturer since 2001 with annual export values exceeding US$100 million, this wrench embodies our commitment to quality and durability. Made from 45# steel with a 320 mm length and 36 mm opening, it delivers exceptional torque transmission and fatigue resistance for heavy-duty tasks. Whether you're tightening bolts in steel frameworks or performing maintenance on industrial equipment, this offset box wrench provides reliable performance and long service life.
Key Features & Specifications
- Premium 45# Steel Construction – Heat-treated for hardness and toughness, ensuring resistance to deformation under high torque.
- Offset Box End Design – 15° offset angle allows access to recessed fasteners and provides better knuckle clearance.
- 320 mm Total Length – Offers extended reach and leverage, reducing operator effort.
- 36 mm Opening Size – Compatible with standard hex bolts and nuts in construction and heavy machinery.
- Black Oxide Finish – Provides corrosion resistance and a non-glare surface for improved visibility.
- Precision Machined – 12-point box end ensures a secure grip and minimizes fastener rounding.
| Specification | Details |
| Material | 45# Steel (Carbon Steel) |
| Total Length | 320 mm (12.6 inches) |
| Opening Size | 36 mm (1.417 inches) |
| Offset Angle | 15° (box end) |
| Drive Type | 12-point box |
| Surface Treatment | Black oxide, optional phosphate |
| Weight | Approx. 0.65 kg (1.43 lbs) |
| Packaging | Single piece or custom sets |
Benefits for Your Operations
- Enhanced Productivity – The offset design allows faster bolt fastening in confined spaces, reducing downtime.
- Reduced User Fatigue – Longer handle provides better leverage, requiring less force to tighten or loosen stubborn fasteners.
- Long Tool Life – 45# steel with proper heat treatment offers excellent wear resistance, even under repeated heavy use.
- Versatile Application – Ideal for structural steel erection, pipeline construction, shipbuilding, and heavy equipment maintenance.
- Cost-Effective – Direct factory pricing from a manufacturer with 20+ years of experience ensures competitive value.
Why Choose Cangzhou Dean Safety&Special Tools?
With over 20 years of manufacturing expertise and annual export revenues exceeding US$100 million, we serve a global customer base across North America, Europe, Southeast Asia, and beyond. Our tools are shipped from ports in Tianjin, Shanghai, and Ningbo, ensuring efficient logistics. We adhere to strict quality control procedures and offer customization options for bulk orders. Every wrench is inspected to meet international standards for dimensional accuracy and hardness. Trust our offset construction box wrench to deliver consistent performance in the most demanding environments.
Contact us today for a quote or to discuss your specific requirements. We are ready to support your projects with reliable tools and professional service.
Frequently Asked Questions
- Q: Is this wrench suitable for use with impact tools? A: No, it is a hand tool designed for manual use. Using it with power tools may cause damage.
- Q: Can I get a different opening size? A: Yes, we offer custom sizes from 20 mm to 55 mm. Please contact our sales team for details.
- Q: What is the hardness of the 45# steel after heat treatment? A: Typically HRC 38-45, which provides a balance of strength and ductility.
- Q: Does the wrench come with a warranty? A: We offer a standard 12-month warranty against manufacturing defects. Extended warranty is available upon request.
- Q: What is the minimum order quantity? A: For standard sizes, MOQ is 50 pieces. Custom orders may have higher MOQ.
- Q: How is the surface finish applied? A: Black oxide is applied via a chemical bath. We also offer phosphate coating or plain finish as options.
- Q: Can I get a sample before placing a bulk order? A: Yes, sample orders are welcome. Sample cost is deducted from the bulk order.
- Q: What packaging options are available? A: Individual boxes, poly bags, or bulk packing. Custom branding is possible for large orders.
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