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.   All our bits are produced by premium material and advnaced technology.

QL popular shanks include QL40, QL50, QL60, QL80 with dimeters from 108mm to 305mm.   All our bits are produced by premium material and advanced technology.