QIN-PCR200-DTH pneumatic crawler drilling rig is drilling in Africa's quarry site

​QIN-PCR200-DTH pneumatic crawler drilling rig with drilling method down the hole, the borehole diameter is 90mm-140mm / 4-5.5 inch in open-pit, quarry, and surface mining site. The superb quality is won the choice from the customers worldwide. Meantime the excellent service makes customers have no trouble at all.