ISO 9001:2015
Friction Welding
Alloy Steel
ROCK BIT
Wooden Box
78mm~1400mm
Xi'an
Product Description
[Application scope]
Welded wide fin spiral drill pipe is mainly used for the construction of gas drainage holes in soft and outburst coal seams (f <0.5), and can also be used for drilling holes in hard and complete coal and rock formations. Both the medium-pressure air drilling process and the high-pressure water drilling process can be used. The large-diameter drill pipe can be used in the sieve tube completion process, and the high-pressure sealed drill pipe can be used in the hydraulic coal cutting process.
Not recommended for the drilling of the following coal seams: soft coal seams with dynamic tendency; coal (rock) seams with nodules and gangue layers; coal seams with many small structures. The medium-pressure rotary drilling process should not be used in water-bearing coal (rock) layers.
[Technical features]
The drill rod body is welded by friction welding process, the overall mechanical performance of the drill rod is good, and the service life is long;
The spiral fin of the drill pipe is continuous and the powder mixing ability is strong;
The thread strength of the drill pipe joint is high, and the anti-sticking performance is good;
The drill pipe can be unscrewed directly by the drilling rig, with high drilling efficiency and low labor intensity of workers.
[Technical specification]
Welded wide fin spiral drill pipe is mainly used for the construction of gas drainage holes in soft and outburst coal seams (f <0.5), and can also be used for drilling holes in hard and complete coal and rock formations. Both the medium-pressure air drilling process and the high-pressure water drilling process can be used. The large-diameter drill pipe can be used in the sieve tube completion process, and the high-pressure sealed drill pipe can be used in the hydraulic coal cutting process.
Not recommended for the drilling of the following coal seams: soft coal seams with dynamic tendency; coal (rock) seams with nodules and gangue layers; coal seams with many small structures. The medium-pressure rotary drilling process should not be used in water-bearing coal (rock) layers.
[Technical features]
The drill rod body is welded by friction welding process, the overall mechanical performance of the drill rod is good, and the service life is long;
The spiral fin of the drill pipe is continuous and the powder mixing ability is strong;
The thread strength of the drill pipe joint is high, and the anti-sticking performance is good;
The drill pipe can be unscrewed directly by the drilling rig, with high drilling efficiency and low labor intensity of workers.
[Technical specification]
| Specification(mm) | Name | Steel grade | Drill rod length (mm) | Number of wings | Diameter (mm) | Adapted rig torque (N·m) | Adapted drill specifications (mm) | |||
| Preferred | Optional | |||||||||
| Φ63.5/50 | Φ63.5/50 Wide wing spiral drill pipe | R780 | 1000,1500, Can be customized according to requirements | Double head | Φ16 | ≤1200 | Φ75 | Φ85 | ||
| Φ73/63.5 | Φ73/63.5 Wide wing spiral drill pipe | Φ20 | ≤3200 | Φ94 | Φ113 | |||||
| Φ73/63.5 High torsion wide wing spiral drill pipe | Φ20 | ≤4000 | Φ94 | Φ113 | ||||||
| Φ73/63.5-35 Large diameter wide fin spiral drill pipe | Φ35 | ≤1900 | Φ94 | Φ103 | ||||||
| Φ73/63.5 High-pressure sealed high-torsion spiral drill pipe | Φ20 | ≤4000 | Φ94 | Φ113 | ||||||
| Φ89/73 | Φ89/73 Wide wing spiral drill pipe | Φ22 | ≤6000 | Φ113 | Φ133 | |||||
| Φ89/73-41 Large diameter wide fin spiral drill pipe | Φ41 | ≤4000 | Φ103 | Φ120 | ||||||
