Product Description
This offset striking open-end wrench is forged from premium 40Cr alloy steel, delivering high strength, excellent toughness, and reliable durability. Fully heat treated for improved hardness, impact resistance, and long service life, it is designed for large fasteners, high-torque applications, and heavy-duty installation or maintenance work.
The unique angled/offset open-jaw design provides extra clearance around flanges, pipes, brackets, protruding studs, and adjacent components. This makes it ideal for special-angle, recessed, or restricted-access fasteners. The open jaw allows fast side access to hex nuts and bolts, especially in applications where a box-end wrench or socket cannot be fitted over the fastener.
The reinforced striking end can be used with a suitable hammer to apply additional impact force to rusted, seized, or high-torque fasteners. A black coated finish provides low glare, rust resistance, corrosion protection, and wear durability. Available in sizes from 22mm to 80mm, this wrench is suitable for petrochemical, pipeline, valve, marine, mining, wind power, and construction machinery maintenance.
Features
- Premium Forged 40Cr Steel: High-quality material with high strength and excellent toughness for heavy-duty industrial fastening work.
- Full Heat Treatment: Improves hardness, impact resistance, wear resistance, and long-term durability.
- Unique Offset Open-Jaw Design: Helps bypass flanges, pipes, brackets, and protruding components for special-angle access.
- Quick Side Access: Open-end profile engages nuts and bolts from the side, ideal for pipe fittings, valves, and long studs.
- Reinforced Striking End: Can be struck with a hammer to add impact force for rusted, high-torque, or difficult fasteners.
- Low-Glare Black Coating: Provides practical rust resistance, corrosion protection, wear durability, and reduced glare.
- Large Size Coverage: Available from 22mm to 80mm for large nuts, bolts, flanges, valves, and industrial connections.
Specifications
| Item No. | Size | Overall Length (L) | Inner Pack | Carton Qty. | Unit Weight | Gross Weight |
|---|---|---|---|---|---|---|
| W16862 | 22 mm | 135 mm | 1 pc | 60 pcs | 0.19 kg | 12.40 kg |
| W16864 | 24 mm | 150 mm | 1 pc | 50 pcs | 0.40 kg | 21.00 kg |
| W16867 | 27 mm | 193 mm | 1 pc | 36 pcs | 0.45 kg | 17.20 kg |
| W16872 | 32 mm | 190 mm | 1 pc | 36 pcs | 0.45 kg | 17.20 kg |
| W16876 | 36 mm | 212 mm | 1 pc | 24 pcs | 0.70 kg | 17.80 kg |
| W16881 | 41 mm | 230 mm | 1 pc | 18 pcs | 1.10 kg | 20.80 kg |
| W16886 | 46 mm | 253 mm | 1 pc | 18 pcs | 1.20 kg | 22.60 kg |
| W16890 | 50 mm | 278 mm | 1 pc | 12 pcs | 1.65 kg | 20.80 kg |
| W16895 | 55 mm | 300 mm | 1 pc | 12 pcs | 2.00 kg | 25.00 kg |
| W16900 | 60 mm | 305 mm | 1 pc | 8 pcs | 2.50 kg | 21.00 kg |
| W16905 | 65 mm | 330 mm | 1 pc | 6 pcs | 3.15 kg | 19.90 kg |
| W16910 | 70 mm | 355 mm | 1 pc | 6 pcs | 3.70 kg | 23.20 kg |
| W16915 | 75 mm | 368 mm | 1 pc | 4 pcs | 4.00 kg | 17.00 kg |
| W16920 | 80 mm | 390 mm | 1 pc | 4 pcs | 6.15 kg | 25.60 kg |
Applications
This offset striking open-end wrench is suitable for:
- Oil, gas, petrochemical, and refinery equipment maintenance
- Industrial pipelines, valves, flanges, and large connection installation
- Construction machinery, mining machinery, and heavy equipment repair
- Shipbuilding, offshore engineering, and port equipment servicing
- Wind power, thermal power, hydropower, and energy facility maintenance
- Steel structures, bridges, tunnels, and large construction projects
- Railway, rail transit, and heavy vehicle maintenance
- Fastening work in machinery interiors, recessed positions, and special-angle locations
- Restricted-access work around pipes, flanges, brackets, and protruding studs
Why Choose Us
Premium 40Cr Steel with Heat Treatment
Forged from 40Cr alloy steel and fully heat treated for dependable strength, toughness, and impact resistance.
Offset Open-Jaw Access for Complex Work
The angled open-jaw design helps bypass nearby obstacles and reach fasteners where straight open-end striking wrenches cannot operate effectively.
Side Access for Pipes and Long Studs
The open end can engage fasteners from the side, making it practical for pipelines, valves, fittings, and long threaded studs.
Low-Glare Black Coated Protection
The black coating reduces glare and improves rust resistance, corrosion protection, and wear durability for industrial and outdoor environments.
Complete Practical Size Range
Available from 22mm to 80mm to meet fastening needs for petrochemical pipelines, valves, flanges, engineering machinery, and large equipment.
Flexible OEM / ODM Support
Custom logos, sizes, offset angles, coatings, packaging, and industrial tool sets are available for distributors, brands, and project buyers.
FAQ
Q1: What is the difference between an offset striking open-end wrench and a standard striking open-end wrench?
A1: A standard striking open-end wrench usually has a straight handle. This offset version has an angled open jaw that provides additional clearance around flanges, pipes, brackets, and protruding studs, making it suitable for special-angle and restricted-access work.
Q2: What is the advantage of the open end?
A2: The open jaw can engage nuts and bolts from the side, which is especially useful for pipe fittings, valves, long studs, and locations where a box-end wrench or socket cannot be placed over the fastener.
Q3: What are the benefits of the black coated finish?
A3: The black coating offers a low-glare surface with good rust resistance, corrosion protection, and wear durability for workshop, outdoor, and industrial environments.
Q4: Can it be used on rusted or high-torque fasteners?
A4: Yes, it is suitable for heavy-duty fastening and removal work. The striking end can be used with a suitable hammer to apply impact force. For severely seized fasteners, use penetrating lubricant and appropriate professional removal procedures.
Q5: What safety precautions should be followed?
A5: Use the correct wrench size and ensure the open jaw fully engages the fastener. Strike only the designated striking end. Wear eye and hand protection, avoid side loading, and do not overload the tool.
Q6: Which sizes are available?
A6: Available sizes include 22, 24, 27, 32, 36, 41, 46, 50, 55, 60, 65, 70, 75, and 80mm.
Q7: Do you support customization?
A7: Yes. OEM/ODM customization is available for jaw sizes, wrench length, offset angle, logo, surface finish, packaging, and tool set configurations.
OEM / ODM (Optional)
We offer flexible OEM / ODM services:
- Custom Dimensions & Structure: Jaw size, wrench length, offset angle, head width, body thickness, and striking-end design can be customized.
- Custom Branding: Laser engraving, steel stamping, screen printing, ink printing, labels, and private-label packaging.
- Custom Surface Finishes: Black coating, black phosphate, black oxide, sandblasting, chrome plating, pearl nickel, and more.
- Custom Packaging: Hang cards, plastic holders, fabric pouches, color boxes, tool cases, inner boxes, and printed cartons.
- Custom Industrial Tool Sets: Common sizes can be configured for petrochemical, pipeline, mining, marine, wind power, and heavy machinery maintenance applications.
- Sampling and Mass Production: Support for drawing-based or sample-based development, sample approval, and stable bulk production.
Please send us your size list, drawings, brand artwork, samples, or project requirements for a customized solution.
