Supanchor Rock Reinforcement Co., Ltd.
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Hollow Ground T73/45 Micropiles T Thread Self Drilling Rock Bolts
Features
SupAnchor has achieved the security application of 30,000,000 meters self-drilling anchor bar in the world.
The self drilling rock bolt is driven to the required depth by means of rotary percussive drilling.Injection is carried out through hollow rock bolt. Injection mixture flows through the holes at the sacrificial drill bit and automatically stabilizes the drilled hole. Injection ends when the mixture begins to exit from drilled hole. The cement grout is popular used for injection of self-drilling anchor.
Applications
1. Foundation
2. Protection of reaining structure
3. Radial systematic anchoring
4. Foundation for avalanche protect
5. Stabilization of tunnel portals
6. Micropiles
7. Soil nailing
Technical Data
| Micro Pile Bar | T73/53 | T73/56 | T73/45 | T73/35 |
| Outside Diameter (mm) | 73 | 73 | 73 | 73 |
| Internal Diameter (mm ) | 53 | 56 | 45 | 35 |
| Cross sectional area (mm2) | 1680 | 1369 | 2267 | 2700 |
| Ultimate load (kN) | ≥ 1160 | ≥ 1035 | ≥ 1575 | ≥ 1865 |
| Load at 0.2% Yield (kN) | ≥ 970 | ≥ 830 | ≥ 1270 | ≥ 1430 |
| Weight (kg/m) | 13.20 | 10.75 | 17.80 | 21.20 |
| Thread type | T73 International Standard / Continuously right hand threaded | |||
| Type of steel | 40Cr / Q345B / S460NH | |||
| Elongation % | Agt ≥ 5%, A100mm ≥ 12% / 10% / 8% / 6%, A200mm ≥ 10% / 6% ... | |||
| Length (m) | (1) x 2, x3, x4 | |||
| Options of Anti-corrosion | Hot-dipped Galvanization / Epoxy Coating / SupCoat *Hot-dipped Galvanization: ISO 1461. *Epoxy Coating: Bending properties up to standard ISO 1519; Impact properties up to standard ASTMD 2794; Adhesion up to standard ISO 2409:2007. *SupCoat: HDG + EC | |||
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.
has its own quality tracking systems. Every batch of anchor bar has its unique batch No.1 exporter of SDA bars in Asia, quality control has been always SupAnchor’s biggest | Mechanical strength test ratio | >= | 3% |
| Dimensions test ratio | = | 100% |
| Surface inspection ratio | = | 100% |