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POWER SET Self-Drilling Friction Bolt,
Filesize: 1.6 MB
Filesize: 1.6 MB
CT-Bolt™ Combination Rock Bolt,
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Filesize: 1.7 MB
Ground Control Solutions for Tunneling and Mining,
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Filesize: 1.6 MB
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Anchors and Rock Bolts
Rebar Rock Bolts
Characteristics
- Sharpened, with cold-rolled thread at the far end
- Standard thread length: approx. 120 mm 1.)
- Including nut and washer
- Compliant bolt plates in different dimensions are available
- Standard lengths: 1,0 to 12,0 m
- Special ALWAG anchor rib geometry (increased bond) for all dimensions and steel grades available on request
Specifications 2.)
| Diameter / Thread designation | Steel grade | Yield strength (steel bar) | Tensile Strength (steel bar) | Elongation at maximum tensile load (steel bar) | Maximum tensile load - anchor system3.) | |
| Reh.min | Rm.min | Agtmin | Fm | |||
| [mm] | [--] | [--] | [N/mm2] | [N/mm2] | [%] | [%] |
| Bst 550 4.) | 550 | 620 | 5 | 190 | ||
| 20 | M 21 | Rock Bolt Steel FA 650/850 | 650 | 850-1050 | 5 | 250 |
| Bst 550 S 5.) | 500 | 550 | 5 | 260 | ||
| 25 | M 26 | Rock Bolt Steel St 650/820 | 650 | 820 | 5 | 350 |
| 30 | M 30 | Bst 550 4.) | 550 | 620 | 5 | 350 |
| 36 | M 36 | Bst 550 4.) | 550 | 620 | 5 | 500 |
Remarks
1.) Maximum thread length 200 mm, available on request
2.) Other dimensions and steel grades are available on request, the indicated values are nominal
3.) Rebar rock bolts with cold-rolled thread, bolt plate, nut, and washer
4.) According to ÖNORM B 4200-7
5.) According to DIN 488-1