INTRODUCTION
R thread self drilling anchor bolt system is composed by hollow rock bolt, anchor nut, anchor plate, anchor coupler, drill bit, centralizer, and the hollow anchor bars can be cut and lengthened by coupling on request.
Functions:
R thread self drilling anchor bolt system is an advanced system which can ensure the anchoring effect for complex ground conditions. It can be integrated with the functions of drilling, grouting and anchoring.
Conditions:
• Tunneling
• Mining
• Slope Stabilization
• Foundation Support
Sinorock has formulated the standard for galvanized products coatings in accordance with ISO 1461 " Hot dip galvanized coatings on fabricated iron and steel articles — Specifications and test methods". The coating thickness of main products is as follows:
1. Safe, reliable, and time saving.
2. Simple installation & operation.
3. Choice of drill bits for different ground conditions.
4. Grouting works synchronize with drilling or after drilling. Grout can fill fractures effectively.
5. Anchor bars can be cut and lengthened on request, applying to narrow spaces.
6. It provides higher bonding stress than smooth steel pipe depending on continuous wave thread.
Hot dip galvanizing anchor bolt is especially suitable for various acid, alkali mist and other corrosive environments, as well as occasions with longer service life requirements and complex environments in geotechnical engineering.
| Size | Outer Dia. (mm) | Ultimate Load (kN) | Yield Load (kN) | Weight (kg/m) |
|---|---|---|---|---|
| SER25N | 25 | 200 | 150 | 2.35 |
| Size | Outer Dia. (mm) | Length (mm) | Weight (kg/pc) | Note |
|---|---|---|---|---|
| SSR25 | 36 | 150 | 0.66 | With sealing structure |
| SER25 | 36 | 150 | 0.68 | Without sealing structure |
| Size | Key Size (mm) | Length (mm) | Weight (kg/pc) | Note |
|---|---|---|---|---|
| SSR25 | 41 | 30 | 0.2 | Heat treatment |
| SER25 | 41 | 35 | 0.23 | Without heat treatment |
| Size | Key Size (mm) | Length (mm) | Weight (kg/pc) | Note |
|---|---|---|---|---|
| SER25 | 41 | 40.5 | 0.31 | Without heat treatment |
| Size | Dimensions (mm) | Thickness (mm) | Hole Dia. (mm) | Weight (kg/pc) |
|---|---|---|---|---|
| SER25 | 150×150 | 8 | 30 | 1.4 |
| 150×150 | 5 | 28 | 0.85 | |
| 200×200 | 10 | 32 | 3.2 |
| Size | Outer Dia. (mm) | Application Range (Advice) |
|---|---|---|
| EX | ||
| SSR25/42 | 42 | Sand, fills, gravel |
| SSR25/51 | 51 | |
| EXX | ||
| SSR25/42 | 42 | Softer sedimentary rocks such as marls, mudstones, siltstone |
| SSR25/51 | 51 | |
| ES-F | ||
| SSR25/42 | 42 | Gravel, soft rock |
| SSR25/51 | 57.5 | |
| ESS-F | ||
| SSR25/42 | 42 | Weathered rock, stone walls, rubble |
| SSR25/51 | 51 | |
| EY | ||
| SSR25/51 | 51 | Competent ground, strong rock |
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