Four Type Bits Face DTH Rock Drill Bits
DTH Rock Drill Bits Center Drop Face
For high penetration rates in soft to medium hard and fissured rock formations，Low to medium
air pressure，Maximum hole deviation control.
DTH Rock Drill Bits Concave Face
The all-around application bit face specifically for medium hard and homogeneous rock
formations，Good hole deviation control and good flushing capacity.
DTH Rock Drill Bits Convex Face
For high penetration rates in soft to medium-hard with low to medium air pressure，It is the
most resistance to steel wash，and may reduce the load and wear on gauge buttons，but poor
hole deviation control.
DTH Rock Drill Bits Flat Face
This kind of face shape is suitable for hard to very hard and abrasive rock formations in
applications with high air pressures，Good penetration rates an resistance to steel wash.
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