Changsha Tianhe Drilling Tools and Machinery Co.,Ltd.
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Blasting Hole DHD360 190mm Dth Hammer Bits Working Pressure 14-24 Bar
DHD360-190mm Button Bit DTH Bit For DHD360 Hammer For Blasting Hole With Recommended Working Pressure 14bar To 24 bar
The products mainly include DTH(down-the hole)hammers and bits with capacity of drilling holes from 3" to 32"(76mm-1000mm) in diameters, DTH drilling tools with large diameters for deep holes drilling, eccentric(ODEX) casing system and concentric casing system, reverse circulation hammers and bits, accessories of rock drills and some other equipments.
| Matched hammer Dia. | Bit diameter | No.× Button Dia.(mm) | Air holes | Weight (kg) | Shank | ||
| mm | inch | Gauge | Front | ||||
| 6” | 165 | 6 1/2 | 8*18 | 8*16 | 2 | 24.5 | DHD360/SD6/ QL60/MISSION60 |
| 171 | 6 3/4 | 8*18 | 4*18+4*16 | 2 | 25 | ||
| 203 | 8 | 10*18 | 8*18+5*16 | 2 | 30 | ||
Different Faces Shapes
CONCAVE / FLAT / CONVEX
Different Buttons Shapes
1. Dome / Round button
Used as gauge buttons of DTH bits, suitable for very abrasive and very hard rock formation.
2. Parabolic / Semi-ballistic
Used as gauge buttons and front buttons of DTH Bits, suitable for medium abrasive and hard rock formations.
3. Ballistic button
Used front buttons of DTH bits, suitable for medium abrasive and medium hard formations. Also be used as gauge buttons for soft rock.
