carte de la pompe de boue
Conclusion
3. Reduced Hole Deviation DTH hammers produce straighter holes compared to rotary drilling tools. This precision reduces the need for corrective drilling, saving time and resources.
Производитель dth hammer

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The reason:
Inlet valve is not open or has silted
Suction line resistance is too high or blocked
Suction height is too high
Inlet valve is not open or has silted
Suction line resistance is too high or blocked
Suction height is too high