DTH Drill String

DTH drill string consists of rotary unit,   drill pipe, crossover sub, hammer and bit.    DTH drill bit is the one who strikes and crushes the rock directly by the force of piston inside the hammer.  

TF DRILLS supplies a full range of DTH bit with popular shanks such as BR, DHD, QL, Mission, SD shanks from diameter 64mm to 750mm.  

Mission popular shanks include Mission 30,Mission 40, Mission 50, Mission 60, Mission 80 with dimeters from 90mm to 305mm.   All our bits are produced by premium material and advanced technology.