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screw drill pipe auger screw conveyer
Features:
1. The high-efficiency spiral drill rod can meet the practical needs for water and gas exploring and injection under the coal mine.It adopts square coupling for rod"s connection, easy assemble and disassemble. It"s tension resistance can be up to 1323.89 Mpa by using special steel material, smithing and heat treatment.
2. Matching our drilling machines with spiral dry drilling technology, it can keep high drilling speed and drilling efficiency. Compareed with traditional drilling technology, it can avoid torsion and bend stress efficiency and improve the drilling speed.
3. it has large advantages in coal digging which adopting serried hole drill and gas discharging. And it can discharge gas and overcome the stress at high speed to achieve the our burst proof and ensure the coal digging safety.
Spiral drill pipes description
Spiral drill pipes design feature: overlay spiral. It guarantees big torque, quick slagging, and clear hole forming. Besides, the drill bit will hardly get stuck. Application: soft coal bed, and other formation similar to coal bed. The tapered drill rod is used for rock drilling, blasting holes and other drilling works in the quarries, coal mines, traffic and other constructions. Generally, the lightduty rock drill uses 7 taper or smaller taper angle, the heavyduty rock drill mainly uses 12 taper angle.
Spiral drill pipes parameter
| No. | Specifications( mm) | Craft | Connection type with drilling machine | ||
| Dia. | Length | Thread type | |||
| 1 | 50-42 | 500~1500 | Taper thread | Friction welding | clamp |
| 2 | 63.5-42 | 500~1500 | Taper thread | Friction welding | clamp |
| 3 | 63.5-50 | 500~1500 | Taper thread | Friction welding | clamp |
| 4 | 73-50 | 500~1500 | Taper thread | Friction welding | clamp |
| 5 | 73-63.5 | 500~1500 | Taper thread | Friction welding | clamp |
| 6 | 90-63.5 | 500~1500 | Taper thread | Friction welding | Match active drill rod |
| 7 | 98-73 | 500~1500 | Hex. Shank | Friction welding | Match active drill rod |
| 8 | 110-63.5 | 500~1500 | Taper thread | Friction welding | Match active drill rod |
| 9 | 130-63.5 | 500~1500 | Taper thread | Friction welding | Match active drill rod |
| 10 | 146-73 | 500~1500 | Taper thread | Friction welding | Match active drill rod |
Ps: Special design is available upon your requirement.
Spiral drill pipes pictures:
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