6'' DTH Drill Bits with Tungsten Carbide Buttons Shank SD6 for Borehole Drilling

Product description

Down-the-hole drilling is to drive the hammer which behind the drill bit by compressed air via the drill pipe. The piston strikes the bit directly, while the hammer external cylinder gives straight and stable guidance of the drill bit. This makes the impact of energy is not lost in joints and allowing for much deeper percussion drilling.

DTH is more suitable for the big hole of hard rock drilling, special for rock hardness over 200Mpa. However, for the rock below 200 MPa, it will not only energy waste, but also in low drilling efficiency, and serious wear to the drill bit. It’s because while the piston of the hammer strike, the soft rock cannot absorb the impact completely, which seriously lower the efficiency of drilling and slagging.

1. Better borehole quality and accuracy.
2. High performance drilling.
3. Adapt to hard rock and rock formation conditions (compared to top hammer).
4. Mainly use pressurized air for slag flushing, and sometimes air foam for special application.
5. Highly efficient in hard rock drilling (compared to the rotary drilling).
6. DTH drilling straightness is best in these three methods(rotary drilling, dth drilling and tophammer drilling)

SD Series DTH drill bit specification:

other size bit

Detail photos:

Company informaiton

At sollroc, customer satisfaction is our top priority. Our sales team takes a proactive approach in meeting customers’ needs. We take the time to get to know you and learn about your operations so we can better assist you. We strive to meet customers’ needs by supplying the tools and equipment you need when you need them, providing product support, and following through with excellent customer service every step of the way.