QY series water well driling rig is a light, eficient and multifunctional driling equipment. it is mainly used for driling waterwells, agricultural irrigation wels and other wells, especially for water prolects in mountainous areas and rock formations. Thedriling rig adopts new hydraulic technology, equipped with large torque hydraulic rotaion motors and a large-diameterhydraulic cylinder for propulsion and lifting. lt is equipped with ordinary alloy drill bits and other drilling tools for rotary driling;conventional ball tooth drill bits are used in hard rock formations for impact rotary driling and high-speed hole formation. inunstable formations such as gravel layer, workers can use DTH hammer with following casing.