D Miningwell down-the-hole drilling features and advantages
1. Long life: made of alloy steel, its service life is long and higher than that of similar products;
2. High drilling efficiency: the drill teeth are wear-resistant, so that the DTH bits can always be kept sharp, thus greatly increasing the cutting speed;
3. Stable speed: DTH bits break rocks by scraping and shearing;
4. Good diameter protection effect: D Miningwell DTH bits have strong wear resistance and good diameter protection performance, which can make efficient use of cutting teeth;
5. Wide range of use: Practice has proved that the drill bit is suitable for hard formations such as carbonate rock, limestone, chalk, clay rock, siltstone, sandstone, etc. Drilling, compared with general DTH bits, especially drilling into rock formations of grade 6-8, the effect is particularly significant.
CIR series DTH bits(Low pressure)
| Technical Parameters | |||||
| Model： | Gauge buttons(mm) | Front buttons(mm) | Tail shank diameter(mm) | Port holes | Weight(KG) |
| CIR76-76 | φ12*5 | φ12*3 | φ43 | 2 | 2.1 |
| CIR90-90 | φ14*6 | φ13*2+φ12*2 | φ53.5 | 2 | 3.7 |
| CIR90-110 | φ14*6 | φ13*3+φ12*3 | φ53.5 | 3 | 4.6 |
| CIR90-130 | φ14*7 | φ13*3+φ12*4 | φ53.5 | 3 | 6 |
| CIR110-110 | φ14*6 | φ13*3+φ12*3 | φ64 | 3 | 6 |
| CIR110-130 | φ14*7 | φ13*3+φ12*4 | φ64 | 3 | 7.4 |
| CIR110-150 | φ14*8 | φ14*3+φ13*6 | φ64 | 3 | 9.6 |
| CIR110-170 | φ15*9 | φ14*6+φ13*10 | φ64 | 3 | 12.3 |
| CIR110-200 | φ15*9 | φ14*6+φ13*12 | φ64 | 3 | 16.5 |
| CIR150-150 | φ16*9 | φ14*6+φ14*4 | φ89.5 | 3 | 14.8 |
| CIR150-175 | φ16*9 | φ14*6+φ14*5 | φ89.5 | 3 | 19 |
| CIR170-175 | φ16*9 | φ14*6+φ14*5 | φ102 | 3 | 21 |
| CIR170-185 | φ16*9 | φ14*6+φ14*6 | φ102 | 3 | 21.8 |
DHD series DTH bits(High pressure)
| Technical Parameters | |||||||
| Model： | Head diameter： | Shank length： | Spline： | Port holes： | Gauge buttons： | Front buttons： | Weight： |
| DHD25A-76 | 76 | 174 | 6 | 2 | φ14mm*6 | φ11mm*4 | 3.2kg |
| DHD35A-90 | 90 | 180 | 8 | 2 | φ14mm*6 | φ12mm*5 | 4.7kg |
| DHD35A-100 | 100 | 180 | 8 | 2 | φ14mm*6 | φ12mm*5 | 4.8kg |
| DHD340-108 | 108 | 209 | 8 | 2 | φ16mm*7 | φ14mm*6 | 7.85kg |
| DHD340-130 | 130 | 209 | 8 | 2 | φ16mm*8 | φ14mm*4+φ13mm*3 | 8.88kg |
| DHD350-140 | 140 | 260 | 8 | 2 | φ18mm*7 | φ15mm*4+φ14mm*3 | 15.8kg |
| DHD350-152 | 152 | 260 | 8 | 2 | φ18mm*8 | φ14mm*8 | 17kg |
| DHD350-178 | 178 | 260 | 8 | 2 | φ18mm*8 | φ16mm*6+φ14mm*5 | 20.4kg |
| DHD360-154 | 154 | 308.5 | 8 | 2 | φ18mm*8 | φ16mm*4+φ15mm*4 | 22.5kg |
| DHD360-178 | 178 | 308.5 | 8 | 2 | φ18mm*8 | φ16mm*6+φ15mm*5 | 26.1kg |
| DHD360-203 | 203 | 308.5 | 8 | 2 | φ18mm*10 | φ16mm*8+φ15mm*6 | 30.4kg |
| DHD380-203 | 203 | 350 | 10 | 2 | φ18mm*10 | φ18mm*4+φ16mm*10 | 48.5kg |
| DHD380-254 | 254 | 350 | 10 | 2 | φ18mm*12 | φ18mm*12+φ16mm*8 | 62.4kg |
