| Customization: | Available |
|---|---|
| Standard: | ISO |
| Length: | 600-6000mm |
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Tapered drill rod
Different rock formations and rock drills require different taper angles. When drilling with high impact hydraulic rock drills in medium-hard to hard and abrasive rock formations, a wide taper angle is normally used. Taper angles of 11 and 12-degrees are normally used on modern drill rigs. For low impact rock drills and softer rock formations, a narrow taper angle of 7 degrees is used. A 7 degree angle can also be used if bit spinning is a problem when using 11 and 12 degree equipment. In addition, a 4.46 degree angle is ideal for soft rock when you're using pneumatic or hydraulic drill rigs to prevent bits from spinning or becoming detached.
| Tapered Drill Rod | L | |
| mm | ft | |
|
Taper degree: 7°, 11° and 12° |
600 | 2 |
| 800 | 2 | |
| 1200 | 4 | |
| 1600 | 5 | |
| 2400 | 8 | |
| 3200 | 10 | |
| 4000 | 13 | |
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