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Help CenterNon-Sparking Monkey Adjustable Wrench for Mining Explosion-Proof Operations, 350 Mm, 1.12kg, Safety Tested
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Cangzhou Dean Safety & Special Tools Co., Ltd, a trusted manufacturer with over two decades of experience in explosion-proof tools, proudly presents our Non-Sparking Monkey Adjustable Wrench – an essential tool for mining and other hazardous environments. Engineered for absolute safety, this 350 mm wrench weighs only 1.12 kg and has passed rigorous safety testing to ensure zero spark risk when used near flammable gases or dust. Whether you are a mine operator, oil rig engineer, or chemical plant manager, this wrench delivers the reliability you need for daily adjustments and clamping tasks without compromising safety.
Crafted from premium non-sparking copper-beryllium or aluminum-bronze alloys, our monkey wrench is designed to withstand extreme conditions while maintaining excellent corrosion resistance. The adjustable jaw opens smoothly to accommodate various nut and bolt sizes, making it a versatile addition to any explosion-proof toolkit. Each unit is individually impact-tested and certified to meet international safety standards, giving you peace of mind in high-risk operations.
🔧 Key Features & Technical Specifications
- Non-Sparking Alloy Construction – Made from copper-beryllium (CuBe) or aluminum-bronze (AlBr), both certified for use in Class I, Division 1 hazardous locations.
- Precision Adjustable Jaw – Smooth worm-gear mechanism allows quick sizing from 0 to 30 mm, ideal for metric and imperial bolts.
- Ergonomic Handle Design – Balanced weight distribution reduces hand fatigue during prolonged use; handle is textured for slip-resistant grip.
- 100% Safety Tested – Every wrench undergoes a spark test and load test before leaving our factory, ensuring zero defects.
- Corrosion & Impact Resistant – Special surface treatment protects against rust and mechanical wear even in humid underground mines.
- Lightweight yet Strong – At just 1.12 kg, it reduces user strain while delivering sufficient torque for most fasteners up to 30 mm.
| Parameter | Value |
|---|---|
| Model Number | DS-AMW-350 |
| Overall Length | 350 mm (13.8 inch) |
| Weight | 1.12 kg (2.47 lb) |
| Jaw Opening Range | 0 – 30 mm |
| Alloy Type | Copper-Beryllium / Aluminum-Bronze (selectable) |
| Safety Certification | Spark test passed per ASTM F2540 |
✔️ Advantages for Your Operations
Using the Cangzhou Dean Non-Sparking Monkey Wrench means you no longer have to worry about accidental ignition during maintenance. The adjustable design eliminates the need for multiple fixed wrenches, saving weight and space in your toolbox. Compared to standard steel wrenches, this tool is softer yet tougher – it will not cause sparks even when accidentally struck against other metal objects. Furthermore, the ergonomic shape and moderate weight (1.12 kg) minimize operator fatigue, improving productivity in long shifts.
Our wrenches are widely used in coal mines, gas extraction sites, petrochemical refineries, grain silos, and pharmaceutical facilities where explosive atmospheres exist. The smooth adjustment mechanism stays reliable even after repeated exposure to dust and moisture, thanks to sealed internal threads.
🏭 Why Choose Cangzhou Dean?
Established in 2001, Cangzhou Dean Safety & Special Tools Co., Ltd has grown into a leading manufacturer with annual export value exceeding US$100 million. We ship from major Chinese ports including Tianjin, Shanghai, and Ningbo, serving markets across North America, Europe, Southeast Asia, Africa, the Middle East, and Oceania. Our factory is dedicated to producing only genuine non-sparking tools, and each piece is batch-tested for safety. With a history of zero safety incidents reported from our tools, we are the preferred supplier for many multinational mining and energy corporations.
We stand behind every wrench with reliable after-sales support and fast delivery. If you need custom branding, special alloy composition, or different jaw capacities, we offer flexible customization (available upon request). Contact our team today for bulk pricing or a sample test – experience the Cangzhou Dean difference.
❓ Frequently Asked Questions
Q1: What materials are used in this non-sparking monkey wrench?
A: Our wrench is manufactured from either copper-beryllium alloy (CuBe) or aluminum-bronze alloy (AlBr). Both are certified non-sparking materials commonly used in explosive environments. You can choose the alloy type according to your specific operational requirements.
Q2: Is this wrench suitable for use in underground coal mines?
A: Yes, absolutely. It is specifically designed for mining explosion-proof operations. The non-sparking property ensures safety in methane, coal dust, and other flammable atmospheres, complying with international safety standards.
Q3: What is the maximum jaw opening?
A: The jaw can open up to 30 mm (approximately 1.18 inches), which covers a wide range of commonly used bolt sizes in mining and industrial machinery.
Q4: How do I maintain the wrench for long service life?
A: After use, clean the tool with a dry cloth to remove dirt and moisture. Lightly oil the adjustment screw occasionally. Avoid exposure to strong acids or alkalis. Regular inspection is recommended. If the jaw becomes slack, the adjustment mechanism can be tightened by our service team.
Q5: Can I get a sample before placing a bulk order?
A: Yes, we offer samples for evaluation. Please contact our sales team to arrange a sample shipment. Sample fees may apply, but we will refund upon placing a formal order.
Q6: Does this wrench come with any certification documents?
A: Each shipment includes a mill test certificate and a spark test report. Additional third-party inspection certificates can be arranged upon request at extra cost.
Q7: What is the typical lead time for bulk orders?
A: For standard 350 mm monkey wrenches, our production time is 15–20 working days after confirmation. Express delivery and smaller quantities can be arranged from our stock warehouse in Cangzhou.
Q8: Are there any size options other than 350 mm?
A: Yes, we manufacture a full range of non-sparking adjustable wrenches from 150 mm to 600 mm. Please consult our product catalog or contact us for specific dimensions.
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