Rock drilling machine/Symmetric Overburden Drilling Equipment with competitive price

Symmetric Overburden Drilling Equipment

1. 10 years manufacturing experience;

2. Certificate: ISO9001:2008

3. Material: Carbide

Bit face shape selection:

1. Concave Face

The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity.

2. 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 the load and wear on the gauge buttons, but poor hole deviation controls.

3. 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 selection:

1. Domed/Round Button

Domed/Round Buttons are usually used as gauge buttons of dth bits, suitable for very abrasive and very hard formations.

2. Parabolic/Semi-Ballistic Buttons

Parabolic Buttons are usually used as gauge buttons and front buttons of dth bits, suitable for medium abrasive and hard formations.

3. Ballistic Button

Ballistic Buttons are usually used as front buttons of dth bits, suitable for medium abrasive and medium hard formations. They can also be used as gauge buttons if the rock is soft.

4. Sharp Button

Sharp Buttons are usually used as front button of dth bits for soft formations where fast penetration rates are possible.

5. Flat Button

Flat Buttons are usually used as protection buttons to reduce wear on rubbing surfaces of dth bits.