7° Tapered Drill Bits

7° Tapered Drill Bit is a kind of drill bit that is used in conjunction with the down-the-hole impactor. It has the characteristics of straight drilling, fast drilling and deep hole drilling. And it is widely used in mining, quarry, hydropower engineering, and drilling water wells.
 Carbide Button Choose Guide
Product Spherical Button Ballistic Button Ogive Button
Applicable types Regular type Retrac type Regular type Retrac type Especially suitable for pneumatic rock driller
Hard Rock
Medium Hard Rock
Soft Rock
Abrasive Rock
Non-Abrasive Rock
Homogeneous Rock
Fissure Rock

Remarks:Other specification bits are available according to customer’s requirements.

 Physical Performance
Items Measured Data
D(g/cm3) 14.94 14.97
HC(Oe) 143 140
σs 9.1 8.8
Ms/% 95 92
TRS(MPa) 3300 3362
POROSITY A02B00C00 A02B00C00
ETA Phase None None
Grain size(μm) 2.5 3
MAX 20 14
Structure Patches None None
KIC None None
HRA 90.3 90.4
HV30 1440 1440



成为第一个“7° Tapered Drill Bits” 的评价者

您的电子邮箱地址不会被公开。 必填项已用*标注