Product Name:  Triangular drill rod

Product Model:

Place of Origin: Shanxi, China

Product Features:

1. The triangular drill rod body is welded using friction welding technology, providing excellent overall mechanical properties and a long service life.

2. The triangular cross-sectional design increases the annular gap between the drill pipe and the borehole wall, ensuring smoother cuttings discharge.

3. The triangular drill pipe joints adopt a double top structure design, enhancing torsional resistance by approximately 30% compared to conventional joints.

4. High thread strength of the three-fluted drill pipe joints offers good anti-galling performance.

5. Drill pipes can be directly screwed on/off by the drilling rig, improving drilling efficiency and reducing worker labor intensity.

6. High-strength triangular spiral drill pipes have large lead helical grooves evenly distributed around the circumference, providing strong powder stirring and discharging capabilities.

7. Integrated large-diameter triangular spiral drill pipes allow for the insertion of corresponding size screens through their inner hole after drilling to the designed depth, achieving "drill to position, screen to bottom," effectively increasing the depth of protective screening in soft and prominent coal seams, preventing borehole collapse after pulling out the drill pipe, and ensuring gas drainage efficiency.

Application Fields:

Triangular drill pipes are mainly used for drilling gas drainage holes in soft and prominent coal seams (f<0.5), typically employing air drilling technology under wind pressure. They are not recommended for use in coal seams with dynamic inclinations, those rich in concretions and interlayers, or coal seams with numerous small structures; rotary drilling technology under wind pressure is not suitable for drilling in water-bearing coal (rock) layers.

Technical Specifications: