The standard method involves percussion drilling in which a drill is alternatively raised and dropped in the descending borehole. It is suited to the drilling of wells in any material from soft clay to the hardest rock.
[pdf] The KT5C Integrated down the hole drill rig for open use is an advanced drilling device integrating the down the hole drilling system and screw air compressor system, characterized by compact structure, excellent integrity and mobility.
[pdf] Built for mobility and precise down-the-hole drilling in small to mid-scale construction sites, JC710 offers a balanced combination of compact design, efficient power transmission, and stable hole-forming performance.
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