The Pezzimenti Tunnelbore system can microtunnel in all diameters from 325mm to 3000mm. Using a variety of standard microtunnelling head diameters for the great bulk of the works, these standard heads can be readily modified to meet project needs.
All modifications are done in-house based on the known ground conditions and client requirements. Microtunnelling in hard rock such as basalt in diameters as small as Ø440mm is possible. For larger diameters options become possible to remove the spoil using augers or vacuum.