In tunneling, mining, and slope stabilization, hollow rock bolts (also known as self-drilling anchors or hollow anchor bars) play a critical role in keeping things safe and stable. But not all bolts are created equal—and sometimes, standard sizes simply won’t do the job.
At our company, we focus on customizable high-strength hollow steel tubes designed specifically for anchor systems. We help our clients go beyond the “off-the-shelf” options and get exactly what they need.
What Makes Our Hollow Rock Bolts Stand Out?
We don’t just provide generic bolts—we provide tailored solutions. Our hollow anchor tubes are available in commonly used outer diameters like 25, 28, 32, and 38mm, but can also be customized in wall thickness, length, and material strength to meet your specific project requirements.
Whether you’re working in:
- Tunnel reinforcement
- Slope protection
- Mining excavation
- Underground construction
…our bolts can be designed to meet high strength, dimensional consistency, good elongation, and excellent weldability—the very qualities your application depends on.
Why Customization Is Critical in Ground Support?
Ground conditions vary, and so should your anchor system. A few millimeters in wall thickness or a slight change in mechanical performance can make the difference between long-term stability and early failure.
That’s why we offer:
- Precision manufacturing for dimensional accuracy
- Excellent weld seam quality
- Support for special steel grades (on request)
- Optimized performance for demanding environments
Flexible. Strong. Cost-Effective.
Our hollow rock bolts are manufactured using refined cold-forming and finishing techniques, ensuring:
- No welding defects
- Smooth internal bore
- Minimal variation in size
- High fatigue resistance
Compared with solid rods or expensive seamless pipes, our high-strength welded hollow tubes offer the perfect balance between performance and cost.
Want to Know More?
We’re here to help you find the best match for your project. Whether you need guidance on material, dimensions, or application, our engineers and sales team are ready to support you.
Contact us now to discuss your application and get a tailored solution that works.
