T Thread Self Drilling Anchor Bars System
T-SDA
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T Thread Self Drilling Anchor Bars System
T thread self drilling anchor bars system is comprised of a hollow threaded anchor bar with a sacrificial drill bit that performs drilling, anchoring and grouting in a single operation.
self drilling anchor bars perform drilling, grouting & anchoring in one step. Easy to process and no risks of drill hole collapse. Suitable for unstable conditions.
Dimensions & mechanical properties for self drilling anchor bars
| T30/11 | T30/14 | T30/16 | T40/16 | T40/20 | T52/26 | |
| Outer diameter/mm | 30 | 30 | 30 | 40 | 40 | 52 |
| Inner diameter/mm | 11 | 14 | 16 | 16 | 20 | 26 |
| Ultimate load/kN | 320 | 320 | 260 | 660 | 540 | 929 |
| Yield load/kN | 260 | 260 | 220 | 525 | 430 | 730 |
Accessories for self drilling anchor bars
1.Anchor hex nut
| T30 | T40 | T52 | |
| Key size/mm | 46 | 60 | 75 |
| Length/mm | 41 | 68 | 70 |
2. Anchor plate
| T30 | T40 | T52 | |
| Dimestion/mm | 150x150 | 200x200 | 200x200 |
| Thickness/mm | 8 | 14 | 30 |
| Hole size/mm | 35 | 54 | 60 |
3.Anchor coupler
| T30 | T40 | T52 | |
| Outer size/mm | 42 | 47 | 68 |
| Length/mm | 105 | 160 | 180 |
4. Drill bit depends on the geological condition(Type EX, EXX, ES, ESS,EY,EYY)
Application for self drilling anchor bars:
- Stabilization of excavations
- Embankment stabilization
- Stabilization and renovation of land slips
- Road construction
- Renovation of retaining walls, tunnels
- Mining
- Slope stabilization
- Soil anchors
Surface Treatment:
- Anti-rusty Oil
- Painting
- Hot dip galvanizing (HDG)
- Epoxy
- HDG + Epoxy
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