Coupling
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About Us: http://sinodrills.org/4-2-coupling.html
The couplings are used to link anchor bars to make the anchor longer, thus promote its installation depth.
Features
- Stable quality;
- Thread is compatible with ISO and other international standards;
- Precision-manufactured anchors with ≤ 0.25 mm tolerance;
- Good mechanical performance.
Pre-supporting, micropiling for foundation underpinning, slope anchorage, etc.
Parameters
| Thread size | Length(mm) | Outside diameter(mm) | Unit weight (kg) |
| R25 | 150 | 36 | 0.6 |
| R32 | 145 | 42 | 0.7 |
| 160 | 42 | 0.8 | |
| 190 | 42 | 0.9 | |
| R38 | 180 | 51 | 1.4 |
| 220 | 51 | 1.7 | |
| R51 | 140 | 63 | 1.4 |
| 200 | 63 | 2 | |
| T76 | 220 | 95 | 4.7 |
| T30 | 105 | 38 | 0.42 |
| T40 | 140 | 54 | 1.1 |
| 140 | 57 | 1.3 | |
| T52 | 160 | 70 | 2.4 |
| T73 | 235 | 89 | 3.7 |
| 245 | 95 | 5.7 | |
| T103 | 255 | 123 | 7.5 |
| 290 | 132 | 12.5 | |
| T127 | 255 | 139 | 7.5 |
| Steel grade | As per request | ||
| Thread direction | Left hand / Right hand | ||
| Thread standard | ISO 10208 / ISO 1720/ Other international standards | ||
| Hardness (HRC) | HRC25~HRC30 | ||
| Features | All are designed with middle stop , O rings are available as per request. | ||
Industries We Serve
Our rock drilling equipment can be applied in various industries, doing rock drilling and crushing duties for digging, blasting, etc.
We mainly offer 4 series of rock drilling tools: top hammer drilling tools, down-the-hole (DTH) drilling tools, self-drilling anchor system and drag bits.
Tunnelling
Water Well，Geothermal well drilling
Quarry/Aggregate
Mining
Construction
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