Mining Support Self Drilling Anchor Bolt Hollow Injection Bar
It is mainly applied in complex layer formation of broken rock,
loose soil, weathering rock and so on which is difficult to make
the hole. It is good for supporting and improving surrounding rock,
and can achieve good supporting effect in tunnel support, radial
support and various types of slope treatment projects.
Specification of Self Drilling Anchor Bolt
| Specification of Self Drilling Anchor Bolt |
| Specification | R25N | R32N | R32S | R38N | R51L | R51N | T76N | T76S |
| Outside Diameter(mm) | 25 | 32 | 32 | 38 | 51 | 51 | 76 | 76 |
| Internal Diameter(mm) | 14 | 19 | 16 | 19 | 36 | 33 | 52 | 45 |
| Ultimate Load Capacity | 200 | 280 | 360 | 500 | 550 | 800 | 1600 | 1900 |
| Yield Load Capacity(kN) | 150 | 230 | 280 | 400 | 450 | 630 | 1200 | 1500 |
| Tensile Strength,Rm | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 |
| Yield Strength,Rp0.2 | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 |
| Weight(Kg/m) | 2.3 | 3.2 | 3.6 | 5.5 | 6.5 | 8 | 16 | 19.7 |
| Thread Type(left-hand) | ISO10208 | ISO1720 | MAIT76Standard |
| Steel Grade | EN10083-1(Alloy Structure Steel) |
| Compared to carbon steel,alloy structure steel has high
anti-corrosion capacity |
Features
1. Drilling, Grouting and anchoring integration, installation
quickly and easily.
2. Do not need to install the anchor bolt separately.
3. Grout returning structure at the bottom, optimize the grouting
effect, can improve the surrounding rock.
4. For the entire stratum, the installation method is the same.
5. Drill bits in various forms fit for different stratum.
6. Wave thread rod for the whole length, the rod can be cut and
connected, and suitable for narrow workplace.
Our services
1.Refund in case of bad quality and late delivery
2.Small order welcomed
3.Free sample is available
4.Payment by T/T, L/C, D/P, Western Union,Paypel
5.Quality assurance contract
