... They are used for core sample, water well, geothermal well, SPT..... Deep well drilling machine project case: This model is ... bit, core barrel, rope, and so on. Deep well drilling machine technical parameters: ModelDLX-130YDLX-180YDLX-200YDLX-3YDLX-3Drilling ... have established cooperation relationship with many universities to update technology and meet various needs from our customers. 3) Our ...