R25/14 Self Drilling Rock Anchor For Tunnling Mining Slope
Stabilization
Specifications of our R51N/36 Casting drill bit:
Outer Diameter:25mm
Inner Diameter:14mm
Utimate Load:200KN
Yield load:150KN
Weight:2.3kg/meter
Anchor bolt
Anchor bolt means a rod that transfers the structures or
geotechnical load to a stable rock formations,it consistsof rod,
drill bit,coupling, plate, grouting stopper and nut. It has been
widely used in tunnling,mining,slope stabilization,
tunneldiseasestreatment and roof supporting of undergroundworks. It
is for loose ground(clay, sand friable etc.) Hollow anchor rod is
made of seamless tube with high strength.
Features of Hollow Grouting Anchor Bolt:
Hollow design, implement the grouting tube function, avoid the
mortar loss when the traditional groutingtube pulled out.Grouting
full, and can achieve the pressure grouting to improve project
quality. Center is good, mortor can wrap the bolt body together, so
that it can avoid corrosion to achibe along term supporting
purposes.Easy installation, without onsite processing of threads.
It can be easily installed an plate, nut.
Selt-Drilling Anchor Bolt Description
It may bodies drilling, grouting and anchoring as a whole.
It has a wide specifications. Diameter:25-130mm.
Qucik and easy construction, high efficiency.
Used invious surrounding rocks.
Specificaton of other anchors rods:
| 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 (KN) | 200 | 280 | 360 | 500 | 550 | 800 | 1600 | 1900 |
Yield load capacity (KN) | 150 | 230 | 280 | 400 | 450 | 630 | 1200 | 1500 |
Tensile strength, Rp0.2 (N/mm2) | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 |
Yield strength, Rp0.2 (N/mm2) | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 |
| Weight(Kg/m) | 2.3 | 3.2 | 3.6 | 5.5 | 6.5 | 8.0 | 16.0 | 19.7 |
Thread type (left-hand) | ISO10208 | ISO1720 | MAIT76 Standard |
| Steel grade | En10083-1 En10083-1(Alloy structure steel) |
| Compared to carbon steel, alloy structure steel has high
anti-corrosion capacity and high mechanical. |
