DHD 360 Without footvalve

DHD 360 Without footvalve

Flat Face: This flat face is suitable for drilling very hard rock formations and corrosive wall formations at high air pressures. When the bits is drilling, the faster the drilling speed, the less wear to the drill body. Concave Face: this concave face is suitable for all rock formations, especially in medium-hard and homogeneous rock formations, the effect is good. The blast hole deviation is small, and the slag discharge effect is good. Convex Face: This Convex face is suitable for low-to medium-pressure drilling of soft-medium hard rock formations, and the drill block is not easy to corrode. The characteristics of this design are the low load of the side button, the wear is not badly and the drilling speed is fast. Double Gauge Face: This double-sided button face is suitable for drilling very hard rock formations at high air pressures. When the bits is drilling, drilling speed is fast, the bit body wear will also be less. Drop Center: When using low-medium pressure to drill soft-medium hard and fractured rock formations, in order to obtain fast rock drilling speed and less blast hole slope, this face shape is usually used.