Sinorock’s expandable rock bolt products boast exceptional quality and durability, crafted from high-grade materials and engineered with precision to excel in demanding environments.
In soft or fractured rock, it offers provisional reinforcement; in harder rock, it provides enduring support. To use, insert the bolt into the hole and inject high-pressure water to expand the tube, forming a circular shape. This expansion creates frictional force between the tube and borehole wall, providing immediate reinforcement through radial pressure and friction along its length.
Speedy, easy setup.
Fast, safe, and simple rock support.
Instant anchoring throughout.
Highly resistant, ideal for heavy loads.
No harmful bonding agents, no need for accelerants, instant load bearing.
Exceptional performance across hard, fractured, and soft rock formations.
Compatible with diverse support methods, offering flexibility.
| Item | Unit | KWB12 | KWB16 | KWB24 | KWB12E | KWB16E | KWB24E |
| Failure Load≥ | kN | 120 | 160 | 240 | 120 | 140 | 200 |
| Yield Load≥ | kN | 100 | 130 | 200 | 90 | 140 | 180 |
| Elongation≥ | % | 10 | 10 | 10 | 20 | 20 | 20 |
| Grouting Pressure | Bar | 300 | 240 | 300 | 300 | 240 | 300 |
| Section Diameter | mm | 28 | 36 | 36 | 27.5 | 36 | 36 |
| Round Tube Diameter | mm | 41 | 54 | 54 | 41 | 54 | 54 |
| Wall Thickness | mm | 2 | 2 | 3 | 2 | 2 | 3 |
| Upper Casing Diameter | mm | 28 | 38 | 38 | 28 | 38 | 38 |
| Expansion Casing Diameter | mm | 30/36 | 41/48 | 41/48 | 30/36 | 41/48 | 41/48 |
| Best Hole Enlargement | mm | 35-38 | 45-51 | 45-51 | 35-38 | 45-51 | 45-51 |
| Hole Diameter Range | mm | 32-39 | 43-52 | 43-52 | 32-39 | 43-52 | 43-52 |
Commonly used in weak surrounding rock, fault fracture zone, large deformation and other complex geological conditions.
Rapidly provide support force, mainly used in hard rock mines, tunnels or emergency rescue.
Contact us now if you have any questions about our company and products. We will retain your information completely private.
Tel.: +86-379-65287220
Phone: +86-17539592302
Email: sinorock@sinorockco.com
Add. : No. 1703, Building 3, No. 1 Fenghua Road, High-tech, District, Luoyang , China (Henan)Pilot Free Trade Zone, Henan Province, P.R. China.
We will contact you within 1 working day, please pay attention to the email with the suffix “@sinorockco.com”.
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