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Down the Hole (DTH) Drilling Tools | Bits, Pipes, Rods
D Miningwell down-the-hole hammer drill bits are made of carbide inserts and steel. Widely used in water well drilling and protection of hard rock formations. In the past 30 years, we have exported this drill bit to many countries with good feedback. You are welcome to contact us if you need. We can supply all series of drilling equipment and drilling tools.
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DTH Hammers & Bits Manufacturer
Content
D Miningwell DTH bits are paired with the corresponding hammer (bore diameter and spline configuration). Customers can customize their DTH bits in various ways, such as changing tungsten carbide inserts (spherical, ballistic, etc.), surface profiles (flat, concave, convex, etc.) and flush holes.
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 |
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