Gold flat spherical DTH drilling tools of DHD340-121 drill bits.
1. applicable hard,very hard and medium soft rock formations.
2. Reliable quality, long service life, rare abnormal breakage
during service life.
3. Good flushing effect to ensure high drilling rate
4. Strict quality warranty and compensation rules
Bit Face Shape Selection:
1. Drop Center Bit
For high penetration rates in soft to medium hard and fissured rock
formations. Low to medium air pressures. Maximum hole deviation
2. Concave Face
The all-around application bit face specifically for medium hard
and homogeneous rock formations.
Good hole deviation control and good flushing capacity.
3. Convex Face
For high penetration rates in soft to medium-hard with low to
medium air pressures. It is the most resistance to steel wash, and
may reduce theload and wear on the gauge buttons, but poor hole
4. Flat Face Bit
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.
Carbide Button Shape Sele
1. Semi-Ballistic Buttons
2. Ballistic Button
3. Spherical Button
4. Two-step Button