Reverse Circulation Drilling(RCD) Rig

الوصف

RCD is essential for the foundation drilling of large diameter(***0 to ***0 mm) Cast In-place piles. This equipment is in use when drilling a borehole through soft and hard rock layers for construction of foundation. A set of drill string with special bit is used when drilling in the borehole and the crashed stones are sucked out through drill pipe rods by means of air lifting during drilling. - The drilling speed is maximized with the power by controlling hydraulic oil pressure. - Low vibration and low noise are a great advantage for construction in the urban area. - By replacing a few parts, the diameter of 1, **0 to 2, **0mm hole can be drilled. - Because drillpipe can be connected to the machine by tiltable pipe rack and gear box without tilting of master, so the efficiency is increased. - Durability can be accomplished by using special bit.