Ordinary double pipe core drill
Diamond double-pipe drilling tool has the characteristics of single motion structure and spring coring, so it can guarantee the rate of core adoption better than diamond single-pipe drilling. Moreover, it can increase drilling speed and reentry footage, extend the working life of drill bit and reduce drilling cost. At present, it is generally used in drilling holes with a depth of less than 300 meters, especially in the field of water and electricity grouting. The company produces two types of ordinary single-action double pipe and double-action double pipe, among which the double-action double pipe drill pipe is generally designed according to the requirements of customers.