A brief description of drag bits.
Drag bits are one of the common types of drill bits that are used for drilling a water borehole, a drag bit is usually designed for drilling soft formations such as sand, clay, or some soft rock. They cannot drill through coarse gravel or hard rock formations. Drag bits can be three wings drag bits and four wings drag bits.
Specifications of drags bits.
| Diameter | Connecting Size | Cutters/Wings | Structures | |
| 27mm | M12x1.75mm | M14x1.5mm | 2 | integral |
| 28mm | M12x1.75mm | F12x12mm | 2 | integral |
| 30mm | M12x1.75mm | F12x12mm | 2 | integral |
| 32mm | M14x1.5mm | F12x12mm | 2 | integral |
| 34mm | M14x1.5mm | F12x12mm | 2 | integral |
| 36mm | M14x1.5mm | F12x12mm | 2 | integral |
| 38mm | T24x5mm | F14x14mm | 2-3 | integral |
| 42mm | T24x5mm | F13-14mm | 2-3 | integral |
| 45mm | T24x5mm | F13-18mm | 2-3 | integral |
| 55mm | T24x5mm | F13-18mm | 4 | two-stage |
| 65mm | T24x5mm | F13-18mm | 4-5 | two-stage |
| 75mm | T33x4.23mm | F13-18mm | 4-5 | two-stage |
| 76mm | T33x4.23mm | F18-24mm | 4-5 | two-stage |
| 82mm | T42x5.08mm | F18-24mm | 4-5 | two-stage |
| 85mm | T42x5.08mm | F18-24mm | 4-5 | two-stage |
| 89mm | T42x5.08mm | F24-32mm | 5-7 | three-stage |
| 95mm | T55x5.08mm | F24-32mm | 5-7 | three-stage |
The features of drag bits
- The price of drag bits is cheap and one of the most drill bits ever.
- It is suitable for drilling soft rocks and earth.
- The drag bits have three wings and two wings.
- It can be used for drilling a water borehole.