Button of the DTH Bit
Romed/Round Button
Romed/Round Buttons are usually used as gauge buttons of DTH bits, suitable for every abrasive and very hard formations.
Parabolic/Semi-Ballistic Button
Parabolic/Semi-Ballistic Buttons are usually used as gauge buttons and front buttons of DTH bits, suitable for medium abrasive and hard formations.
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.
Sharp Buttons
Sharp Buttons are usually used as front buttons of DTH bits for soft formations, suitable for high rotation speed and low bit broken rate soft rock.
Flat Buttons
Flat Buttons are usually used as protection buttons to reduce wear on rubbing surface of DTH bits.