Threaded blade bits

　　Threaded blade bits are divided into threaded cross bits and threaded X-type bits, which connect with threaded drill rods by threads to transfer impact power and rotation torque for breaking rocks. The threaded bladed bits, working with hydraulic drill rigs and hydraulic jumbos, have main threads of R25，R28，R3212，R38，T38，T45 and T51, which are widely used in open-pit mining, underground mining, tunneling, anchoring, furnace tapping, tunnel construction, hydropower projects, quarrying and construction.