Plug-in Helical Auger Drill Rod

• Certification: ISO 9001:2015
• Manufacturing Process: Friction Welding
• Material: Alloy Steel
• Specification: 78mm~1400mm
• Trademark: ROCK BIT
• Origin: Xi′an

Product Description

[Application scope]
Plug-in spiral drill pipe is mainly used in dry rotary drilling process. The construction coal seam has low strength, high gas content, fast desorption speed, poor permeability, hardness coefficient f <0.5, and difficult to form holes. It is also widely used in geotechnical engineering such as hydropower and railway. The large-diameter quick-insert sealed spiral drill rod can be used for the screen hole completion process. It is not suitable for soft coal seams with dynamic tendency, coal (rock) seams with nodules and gangues, coal seams with more small structures, water-bearing coal seams or extremely hard coal seams.

[Technical features]
1. The core rod of the drill rod is welded by the phase friction welding process, and the overall mechanical properties of the drill rod are good;
2. The spiral fin of the drill pipe is continuous and the powder discharging effect is good;
3. The drill rod can realize positive and reverse rotation, which is convenient for handling accidents in the hole;
4. Drill pipe joints have been treated to improve fatigue life;
5. The spiral fin of the drill pipe is higher, which can reduce the strength of the drilling hole;
6. No rinsing medium is needed during the drilling process, which reduces the auxiliary work of configuration and delivery of rinsing fluid;
7. The quick-insert sealed spiral drill pipe has a sealed structure, which can meet the drilling needs of water, wind and other media circulation.

[Technical specification]

Drill rod specifications(mm)	Name	Steel grade	Drill rod length (mm)	Joint structure	Number of wings	Connection Type	Diameter	Adapted rig torque (N·m)	Recommended drill specifications (mm)
									Preferred	Optional
Φ78/50	Φ78/50 Plug-in spiral drill pipe	R780	1000,1500, Can be customized according to requirements	Hexagonal pyramid	Double head	Single pin connection	/	≤1200	Φ85	Φ94
Φ88/50	Φ88/50 Plug-in spiral drill pipe						/	≤1200	Φ94	Φ96
	Φ88/50 Quick-insert sealed spiral drill pipe					U-pin connection	10	≤1200	Φ94	Φ96
Φ100/63.5	Φ100/63.5 Plug-in spiral drill pipe					Single pin connection	/	≤1900	Φ110	Φ120
	Φ100/63.5 Large-diameter quick-insert sealed spiral drill pipe					U-pin connection	28	≤1900	Φ110	Φ120
Φ110/63.5	Φ110/63.5 Plug-in spiral drill pipe					Single pin connection	/	≤1900	Φ120	Φ130
Φ110/73	Φ110/73 Plug-in spiral drill pipe						/	≤4000	Φ120	Φ130
	Φ110/73 Quick-insert sealed spiral drill pipe					U-pin connection	20	≤4000	Φ120	Φ130