High-Elongation Self-Drilling Anchor Bolt System
The high-elongation anchoring system is a specially engineered support component with a significantly higher elongation capacity than conventional anchor bolts. It can absorb energy through controlled plastic deformation as the surrounding ground deforms, helping reinforce and stabilize the surrounding rock mass.
Key Features of High-Elongation Products
As a type of self-drilling anchoring system, it integrates drilling, grouting, and anchoring into a single installation process. Its high elongation capacity allows the anchor bar to continuously elongate under ground deformation, helping control deformation and maintain surrounding rock stability.
① High Elongation: Significantly higher elongation than conventional anchoring systems, with an elongation of A ≥ 15%.
② Enhanced Safety: Higher elongation reduces the risk of sudden brittle failure during service, providing improved safety and deformation tolerance.
Hollow Anchor Bar
| Size | Outer Dia. | Ultimate Load | Yield Load | Elongation | Weight | ||||
| mm | in | KN | Kips | kN | Kips | % | kg/m | Lbs/ft | |
| SLR25 | 25 | 0.98 | 170 | 38 | 130 | 29 | 15 | 2.65 | 1.78 |
| SLR28 | 28 | 1.10 | 200 | 45 | 150 | 34 | 20 | 3.20 | 2.15 |
| SLR32 | 32 | 1.26 | 280 | 63 | 220 | 50 | 20 | 4.25 | 2.86 |
| SLR38 | 38 | 1.50 | 400 | 90 | 300 | 68 | 20 | 6.00 | 4.03 |
| SLR28 | 28 | 1.10 | 210 | 47 | 160 | 36 | 15 | 2.90 | 1.95 |
| SLR32 | 32 | 1.26 | 310 | 70 | 240 | 54 | 15 | 4.00 | 2.69 |
