Brief Details of Water Well Drilling Rig:

1. Model No.: DFQ-400

2. Max. Drilling Depth:400m

3. Drilling Rod Diameter:Φ89/Φ102

4. Borehole Diameter: 105~~400mm

5. Warranty: One year guarentee excluding wearing parts

6. Certifications: BV, SGS Certificate

7. Applications:Water Well,Irrigation wells,Geological Exploration,Geothermal Heat Project etc.

DFQ-400 dth drill rig is a new portable air-operated drilling rig, widely used for water well, geothermal well, mining blast, etc. It is especially good for rock drilling, one hour is able to drill 20~30m hard rocks.

1. Power supply:

Power supply is 122HP diesel engine, with large power, support stable working.

2. Crawler base:

It can be mounted on crawler base, support by four high hydraulic legs, very convenient to work in rugged and slope areas.

3. Air compressor and DTH hammer drill:

It adopts air compressor feeding, equipped with DTH hammer tools, very efficient for drilling rocky mountains and hard rocks. It only takes 3~5 minutes to drill one meter hard rocks.

4. Mud pump

Designed wih BW-200 or BW-250 mud pump, DFQ-400 water well drilling rig can also work for soft ground, labor saving, multi-functional.

5. Top drive and full hydraulic control

It adopts advanced top drive technology. Zhengzhou Defy has its own powerful R&D team, with mature technology for stable product and new inventions. 

If you have interest in our DFQ-400 crawler mounted dth drill rig, please feel free to contact me. We will give you professinal suggest on models according to your project need for depth and caliber.

We have different models for drilling rig machines for choice:

Please contact Andrew for more details and best offer!!

Mobile/Whatsapp:0086-18681448031

Email:andrew(@)

Skype:live:defy-drillingrig

Web: ,

Facebook: /cndrillingrigs

Company Info. and Service

We build the portable water well drilling rigs with nothing but the best components and materials. We work with hydraulic experts to help us make sure the rigs we build have an efficient hydraulic system. No matter what model of drilling rig you choose, you can rest assure that we have put many hours builing, testing and inspecting your rig.

Drilling Rig Manufacturer DERY Service