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China Suppliers Stainless Steel Hose Clamps (DIN 301- High Torque Worm Drive Clamps from Factory
Key Features & Benefits
✅ Non-Perforated Band & Rolled Edges
Eliminates sharp edges and holes that can cut or tear hoses, extending the service life of rubber and plastic tubing.
✅ High-Torque Trapezoidal Thread Design
Trapezoidal worm teeth provide smoother torque transfer, better self-locking, and consistent clamping force even under vibration or thermal cycling, preventing loosening.
✅ Corrosion-Resistant Stainless Steel Construction
Available in premium 304/316 stainless steel (W4 grade) or galvanized steel options, suitable for water, oil, gas, and mild chemical environments.
✅ Adjustable Range (25–40mm shown)
Wide adjustment range accommodates common hose and pipe diameters, reducing inventory complexity for multi-size projects.
✅ Universal Compatibility
Fits rubber hoses, PVC pipes, fuel lines, coolant hoses, and more in automotive, plumbing, HVAC, and marine systems.
✅ Quick & Easy Installation
Cross-recessed screw head works with standard screwdrivers or power tools for fast, secure installation.
Technical Specifications
| Parameter | Details |
|---|---|
| Standard | DIN 3017 |
| Material Options |
- W1: Galvanized steel - W2: 430 stainless steel band + zinc-plated screw - W4: 304/316 full stainless steel |
| Band Width | 9mm / 12mm (standard sizes) |
| Clamping Range | 25–40mm (custom ranges from 8mm to 240mm available) |
| Maximum Torque | Up to 8 N·m (size-dependent) |
| Surface Finish | Polished / Zinc-plated |
| Certifications | ISO 9001, CE compliant |
Typical Applications
- Automotive fuel lines, coolant hoses, and vacuum lines
- Plumbing and irrigation hose connections
- HVAC and refrigeration system tubing
- Marine and outdoor piping installations
- Industrial machinery fluid transfer lines
- Emergency hose repair and retrofitting
Packaging and transportation
Why Choose Our German-Type Hose Clamps?
- Factory-direct pricing with bulk order discounts
- Strict quality control for consistent torque and corrosion resistance
- Fast lead times for standard sizes (3–5 business days)
- Custom logo marking and OEM/ODM services available
- Free sample testing for large projects
Contact our sales team today to request a quote or discuss your custom requirements!
Frequently Asked Questions (FAQ)
❓ What is the advantage of the non-perforated band design?
The non-perforated band features a smooth underside and rolled edges. Unlike perforated bands, it eliminates sharp edges and holes that can pinch, cut, or tear soft rubber and plastic hoses, significantly extending their service life.
❓ What materials are W1, W2, and W4?
These designations represent different material compositions: W1 is fully galvanized steel; W2 features a 430 stainless steel band combined with a zinc-plated screw; W4 is constructed entirely from 304 or 316 stainless steel for maximum corrosion resistance in harsh environments.
❓ Do these hose clamps comply with industry standards?
Yes, our German-type hose clamps are manufactured in strict compliance with the DIN 3017 standard and are certified under ISO 9001 and CE requirements.
❓ Can I request custom sizes or custom branding?
Absolutely. We offer customizable clamping ranges from 8mm up to 240mm, and we provide OEM/ODM services including custom logo marking and specialized packaging configurations.
❓ What is the standard lead time and sample policy?
Standard sizes typically ship within 3 to 5 business days. We also offer free sample testing for large-scale projects so you can verify our quality before placing a bulk order.