Supanchor Rock Reinforcement Co., Ltd.
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SDA R51N Rock Drilling Self Drilling Anchor Hollow Bar In Tunneling
Features
SupAnchor® has achieved the security application of 30,000,000 meters self-drilling anchor bar in the world. Self drilling anchor system provides a solution for efficiently installing reinforcing bars in unconsolidated or fractured ground, where it is difficult to keep boreholes intact long enough for traditional bolt installation.The self drilling anchor system is a bolting solution for difficult ground and rock conditions. The system enables drilling and grouting in one operation, making much saving in jobsite and project time.
Applications
1. Foundation for avalanche protect
2. Radial systematic anchoring
3. Tunneling
4. Spilling
5. Root piling
6. Mining
8. Slope stabilization
Technical Data
| Anchor Rod | R51L/36 | R51L/34 | R51N/33 | R51N/31 | R51/950 | R51/660 |
| Outside Diameter (mm) | 51cc | 51 | 51 | 51 | 51 | 51 |
| Internal Diameter (mm ) | 35.5 | 34 | 33 | 30.6 | 30.6 | 33 |
| Cross sectional area (mm2) | 802 | 890 | 968 | 1070 | 1070 | 968 |
| Ultimate load (kN) | 550 | 550 | 800 | 800 | 950 | 660 |
| Load at 0.2% Yield (kN) | 450 | 450 | 630 | 630 | 760 | 540 |
| Weight (kg/m) | 6.30 | 7.00 | 7.60 | 8.40 | 8.40 | 7.60 |
| Type of steel | 40Cr / 20Cr / Q345B | |||||
| Elongation % | Agt ≥ 5%, A100mm ≥ 12% / 10% / 8% / 6%, A200mm ≥ 10% / 6% ... | |||||
| Thread type | ISO 1720 - R51 / Left or Right | |||||
| Length (m) | (1) x 2, x3, x4, | |||||
| cOptions of Anti-corrosion | Hot-dipped Galvanization / Epoxy Coating / SupCoat Impact properties up to standard ASTMD 2794; | |||||
Anchor Bar and Accessories
Job sites
SubNumbers
10 Years - The average seniority > 10 years, which is not common in anchor manufacturing industry.
20 Years - 20 years of exporting experience, familiar with different product standards from different
customers and countries.
26 Years - 26 years of exploration and development, SupAnchor has become the No.1 SDA bar
manufacturer in Asia.
60 Countries - customers from 60 countries. Our self drilling anchor systems have been used by
customers from 50 countries all over the world, including America, Chile, Germany,
Australia India, etc.
1,500 Projects - SupAnchor’s products have been widely used in over 1500 massive projects.