dth rotary drilling
\text{Pressure} (psi) = \text{Fluid Density} (ppg) \times \text{Depth} (ft) \times 0.433
Understanding 185 CFM Air Compressors
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

2, according to the aperture is not the same, the drill can be divided into light drilling rig, medium drilling rig, heavy drilling rig.
2, according to the aperture is not the same, the drill can be divided into light drilling rig, medium drilling rig, heavy drilling rig.