1.The brief introductions of KQZ-200D pneumatic water well drilling rig KQZ-200D pneumatic water well drilling rig is suitable for drilling and geothermal drilling. It has many advantages, such as large diameter, deep drilling, fast footage, flexible movement and wide application area. 2.The specifications of KQZ-200D pneumatic water well drilling rig KQZ-200D pneumatic water well drilling rig Borehole diameter mm 100-254 Borehole depth m 200 Drilling angle ° 45-90 One-time feed stroke mm 1500 Motor power kw 11 Diesel engine power hp 8.5 Rotating speed of drilling tools rpm 52 Air pressure mpa 1.45-2.5 Air consumption l/min 15-27 Total weight kg 650