HIGH PRESSURE ROCKMASS INJECTION.
GFRP tube with integrated packer function for high pressure injection of weathered rock mass.
The high torque hollow bar is fitted with an expansion packer and integrated non return valve. Two additional valves are fitted to both ends of the tube, the top valve to open when the packer is inflated, the bottom valve to prevent backflow after injection.
The GFRP system allows cutting during heading or mining of ore. Rapid heading will not be delayed. Light weight makes handling easy, even in confined underground conditions.
Advantages
- ALL THREAD REBAR
- HIGH END LOADING
- PERMANENT APPLICATION
Features
- High flexibility suited for applications without couplings in confined locations.
- Low density reaching just 30% of the density of steel
- The special thread profile and an optimised matching between bolt thread and nut thread ensure high end loads that can almost reach the level of steel anchor systems
- Low weight facilitates handling, minimizes the transportation weight
- Super high hydraulic pressure resistance
| PROPERTIES | NOMINAL VALUE |
|---|---|
| Outer Diameter (mm) | 25 |
| Inner Diameter (mm) | 8 |
| Cross Sectional Area (mm²) | 350 |
| Breaking Thread Load- Steel Nut | 180 |
| Beaking Thread Load- FRP Nut | 70 |
| Bending E-Modulus (Gpa) | 40 |
| Antistatic( Ø) | 10E8 |
| Inner Pressure (MPa) | 240 |
| Strain At Failure (%) | 2.1 |
| Weight (kg/m) | 0.78 |
Product Options
- BOLT GRP INJ 2M J64-22/8 NT0000140
- BOLT GRP INJ 3M 9.5MM J64-22/8 NT0000142
- INJ GRP INJECTION BOLTS 2M 25/8MM NT0000133
- INJ GRP INJECTION COUPLERS NT0000131
Packaging
- Usually packed 150 bolts per pallet
