They are specially designed for drilling holes with depth over 500 meters.
Every part for impacting and connecting adopt specialized steel with high strength, unique heat treatment, and more accuracy machining. The whole sets are very reliable. A protection device is added to avoid any abnormal conditions under the deep well.
1. Drilling dia: 180-800mm
2. Working air pressure: 0.6-2.5Mpa
3. Matched bits, DHD: COP, MISSION, BR, QL
More informations, pls contact us!



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