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Help Center45# Steel Convex Striking Box Wrench, 30mm Opening, Ring Wrench,Heavy Duty Striking Box Wrench
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Welcome to Cangzhou Dean Safety & Special Tools Co., Ltd, a trusted manufacturer since 2001 with an annual export value exceeding US$100 Million. Our 45# Steel Convex Striking Box Wrench, 30mm Opening is engineered for heavy-duty applications where torque and reliability are non-negotiable. Designed with a convex striking face and robust ring wrench profile, this tool delivers superior force transmission and extended service life in demanding industrial environments. Built on decades of manufacturing excellence and exported to global markets including North America, Europe, and Asia, this wrench sets the standard for strength and precision.
Unlike standard wrenches, our Heavy Duty Striking Box Wrench features a specially treated convex striking area that safely absorbs hammer blows without deformation. The 30mm box end is precision machined for a tight fit on hex fasteners, minimizing rounding and slippage. Constructed from 45# medium carbon steel, the wrench undergoes controlled heat treatment to achieve optimal hardness and toughness. Whether you are tightening flange bolts in a refinery or assembling heavy machinery, this tool provides the leverage and durability you need.
Key Features & Benefits
- High-Strength Material: 45# steel with quenched and tempered treatment ensures excellent resistance to wear and impact.
- Convex Striking Face: Specially designed to spread strike force evenly, reducing damage to the wrench and fastener.
- Precision 30mm Opening: CNC-machined to tight tolerances for a secure grip on standard hex nuts and bolts.
- Heavy-Duty Construction: Extra-thick wall and reinforced handle provide maximum torque transfer without breakage.
- Ergonomic Handle: Smooth, anti-slip surface improves grip and reduces user fatigue during extended use.
- Versatile Application: Ideal for use in oil & gas, construction, mining, shipbuilding, and heavy equipment maintenance.
Technical Specifications
| Material | 45# Steel (carbon steel) |
| Opening Size | 30 mm (custom sizes available) |
| Overall Length | 380 mm (approximate, may vary) |
| Surface Finish | Black oxide (optional phosphating or galvanizing upon request) |
| Weight | Approx. 0.8 kg |
| Heat Treatment | Quenching + tempering (HRC 38-42) |
| Packing | Single piece or bulk (custom packaging available) |
The Heavy Duty Striking Box Wrench is designed for use with a hammer or mallet on the convex striking face. It is not intended for use with power tools. Always wear appropriate safety gear during operation. The 30mm opening fits standard metric fasteners and can be customized for special sizes upon request.
Why Choose Dean Safety & Special Tools?
Since 2001, we have been a leading manufacturer of safety and special tools in Cangzhou, Hebei, China. With annual exports exceeding US$100 Million, our products serve markets across North America, South America, Europe, Africa, Oceania, and Asia. Our production facilities are equipped with advanced CNC machines and heat treatment lines, ensuring consistent quality in every batch. Every wrench undergoes strict dimensional and hardness inspection before packing. We offer flexible customization in size, finish, and packaging to meet your specific requirements. Contact us today for bulk orders or samples. We are ready to support your industrial tool needs with professionalism and fast delivery from ports like Tianjin, Shanghai, and Ningbo.
Frequently Asked Questions (FAQ)
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Q: Can this wrench be used with an impact wrench?
A: No, this is a manual striking wrench designed for hammer blows on the convex face. It is not intended for use with power or impact tools. -
Q: What type of steel is used and is it durable?
A: The wrench is made from 45# medium carbon steel, heat-treated for hardness (HRC 38-42) and toughness, providing long service life under heavy loads. -
Q: Is the 30mm opening suitable for standard metric nuts?
A: Yes, the opening is precision machined to fit standard 30mm hex nuts. Custom sizes are available upon request. -
Q: Does the wrench come with a surface coating to prevent rust?
A: The standard finish is black oxide, which offers moderate corrosion resistance. Alternative finishes like zinc plating or phosphating can be applied as optional. -
Q: Can I get other sizes besides 30mm?
A: Absolutely. We manufacture a full range of striking box wrenches from 10mm to 100mm. Custom sizes are also available with minimum order quantity. -
Q: What is the typical lead time for this product?
A: For standard sizes and finish, lead time is about 15-25 days depending on quantity. Custom orders may require additional time. Please contact us for details. -
Q: Do you provide any warranty or quality guarantee?
A: Yes, we stand behind our products. Defects in material or workmanship will be replaced or refunded within the warranty period. Please refer to our terms. -
Q: How should I maintain this wrench?
A: After use, clean with a dry cloth and apply light oil to prevent rust. Store in a dry environment. Avoid striking the box end directly to preserve precision.
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