GRUNDOPIT Keyhole

GRUNDOPIT K is a steerable bore rig for the trenchless installation of gas and water house connections up to OD 63 mm. The bore is carried out from out of a keyhole of only 60 cm Ø. The spoil is removed from the keyhole by a suction excavator to provide access to the main pipe. Then GRUNDOPIT K can be set up. The bore head and the drill rods are transported to the bore rig via “lift”, automatically placed in bore direction and screwed together one after the other.

The pilot bore (up to 25 m length) can be upsized in reverse mode to a maximum diameter of 90 mm. The product resp. protection pipe is pulled in simultaneously and connected to the main pipe above ground. The asphalt core is used to seal the keyhole afterwards. Thus additional costly re-instatement and possible consequential damages are avoided.

PIT-04

_{View into the keyhole. GRUNDOPIT K is operated above ground.
Connection to the main pipe above ground using special tools.}

Advantages:

Working space diameter = 60 cm
Operation and connection above ground
spoil removal with suction excavator
Detectable and steerable bore head
Drill rod length 230 mm
Bore length up to 25 m
Max. upsizing diameter = 90 mm
Thrust and pull back = 40 kN
Torque = 850 Nm / 60 rpm

Click here for a leaflet on the Grundopit Keyhole

GRUNDOPIT Keyhole

Further information on GRUNDOPIT