We are one of the well-established manufacturers, exporters, and suppliers of an extensive range of Drilling Rigs and Ancillary nufactured in strictpliance with the international quality standards, these equipment are known for their excellent functionality, robust construction, easy operation, and high speed.2.Diamond drill bit, alloy drill bit and steel roller drill bit and so on are available for drilling according to different geological structures. 3.When the final holes are respectively 75mm and 46mm in diameter, the rated hole depths are separately 100m and 180m. The maximum of depth may not exceed 110% of that drilled in each hole. The ...is specialising in drilling rigs and drilling parts for decades. We have exported to more than 30 countries all over the world. We have kinds of drilling rigs, such as DTH (Down The Hole) drilling rig, Water well drilling rig with different types …A: Yes, we are a professional drilling rig and its parts man produceude rotary drilling rig, Kelly bar, drilling bucket, drilling auger, casing oscillator, desander and tricone bit, etc. Q3: How about your delivery time? A: Normally the delivery time is about 35 days.