Changsha Tianhe Drilling Tools and Machinery Co.,Ltd.
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Anti Corrosion 90mm Hammer Drill Bits For Rock D3.5 Shank ISO9001 Certification
Specification
| HAMMER INCH | BIT DIA(MM) | BIT DIA(INCH) | SHANK |
| 1" | 64MM-76MM | 2 1/2"-3" | BR1 |
| 2" | 76MM-90MM | 3"-3 1/2" | BR2/PAD320 |
| 3" | 85MM-105MM | 3 2/5"-4" | BR3/COP32 |
| 3.5" | 85MM-110MM | 3 2/5"-4 1/3" | DHD3.5/IR3.5/COP34 |
| 4" | 105MM-140MM | 4"-5 1/2" | DHD340/COP44/QL40/SD4/MISSION40 |
| 5" | 127MM-200MM | 5"-8" | DHD350/COP54/QL50/SD5/MISSION50 |
| 6" | 152MM-254MM | 6"-10" | DHD360/COP64/QL60/SD6/MISSION60 |
| 8" | 195MM-350MM | 7.2/3"-13 4/5" | DHD380/COP84/QL80/SD8/MISSION80 |
| 10" | 254MM-380MM | 10"-15" | QL10/SD10/NUMA100 |
| 12" | 305MM-457MM | 12"-18" | SD12/NUMA120/DHD112 |
| 14" | 445MM-600MM | 17 1/2"-23 1/2" | TH14/TS14 |
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.
Mainly market
China, Chile, Brazil, Peru, Korea,Malaysia, Italy, Germany, Sweden, Saudi Arab, Kenya, Australia, South Africa, Russia, etc..