Difference between DTH(Down the Hole) Drilling and Top ...
2017-12-15u2002·u2002Compared to pneumatic drills, hydraulic drills are capable of higher percussion power and faster penetration rates. Percussive drill rig is built around the hammer or rock drill. in percussive drilling rock is broken with impact energy. Impact Force per Blow : 20 to 60 Tons. Blow Frequency: 30 – 60 Blows/Sec (Top Hammer…
Get Price