Hydraulic rig CF4

The CF4 in diaphragms mode can use the exhisting kelly bar of the standard version for bored piles, adding the diaphragms kit. Alternatively the rig can be equipped with a square kelly for a better working precision. The CF4 can also do close to the wall diaphragms thanks to a special device which replace the standard rotary head. With a max width of just 2320mm, the CF4 can move in limited access areas and restricted spaces.