... ,piling work and drilling sampling. Small diameter piling drill,Multiple usage drill rig Description: JSGY-200-1DT is a multiple ... hence the rig is able to move freely at 300mm, which greatly facilitate lowering and lifting drill tooling. 4, Hydraulic feeding, ... , lower chuck for reliable drilling rods tightening, able to adapt to different drill rods, drive pipe is not necessarily required, lower ...