Well drilling rigs by the upper piston cavity under the exhaust air, down into the drill HXY-5A-type hammers Price, played the role of cooling the drill bit and bottom hole cuttings out of the wellhead. Its rotation and circulating cleanout part of the structure and washing wells with compressed air rotary drilling rig turntable is basically the same, the use of tungsten carbide drill bits or roller cone bits and so on. Pneumatic DTH drilling rig can be used in hard rock drilling deep wells, high drilling speed and drilling speed is not due to increased drilling depth decreases, the borehole drilled straightening. Work drilling machine is pumping reverse circulation type. It works are: the role of atmospheric pressure, the circulating fluid from the settling tank through the return ditch along the annular gap flow to the wellbore bottom, because the turntable drive drill, drill driven by rotation of the drilling HXY -5A type hammers, established by the mud pump suction vacuum the debris drill mud suction lumen, then rose to the faucet, the mud pump into the sedimentation tank, circulating fluid continues to flow after precipitation wellbore, so so cycle HXY-5A-type piling machine parts, forming a reverse circulation drilling work. Mud or water from the drill pipe into the outflow from the wellhead. Positive circulation drilling machine. Mud or water from the drill pipe sucked out from the wellhead inflows. For the reverse circulation drilling machine. Refers to reverse circulation drilling fluid (mud or water) in the drilling machine cycle ways to say HXY-5A-type piling machine production line, drilling machine drill drilling time will have to produce sediment, slag stone, through the pros and cons They can be brought to the surface by the mud circulating these scum, and then after after settler back to the drilling mud. Thus, the continuous cycle, and finally into the hole. Reverse circulation can bring a larger diameter slag. HXY-5A-type pile driver where to sell _ Tibet HXY-5A-type hammers _ Prius Prius provided by Luoyang Drilling Equipment Co., Ltd. Luoyang Prius Drilling Equipment Co., Ltd. (www.zuanji888.com/) strong, credible, Luoyang in Henan and other industry-specific equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Prius into the brilliant and you work for a better future!