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Dth drill rods (also called as drill tubes or drill pipes) are the mechanism to transmit impact force and rotation torque to dth hammer and dth bit, as well as offer pass for the air flow.guizhou vilong supplies a full size of friction welded dth drill rods from 76mm to 140mm with different wall thickness. in dth drilling, the percussive dth hammer is located behind the drill bit, inside the ...

We are good quality supplier of dth drill bit, dth hammer, dth drill rods from china. army green dth down the hole drilling tools 178mm high air pressure flat face concave face dth drill bit, water well drill bits down the hole cir110 110mm no foot valve water hammer drilling 4" dhd 340a for hole blast drilling machine

We offer a complete range of dth drilling tools including hammers, bits, pipes, adapters, reverse circulation products, breakout benches and grinding machines with consumables. innovation and commitment over the decades the history of the down-the-hole hammer manufacturing goes back more than four decades.

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