Unguided and guided drillings in one, two or three phase procedure (pilot drilling, reamer drilling with steel protective piping; alternative reamer drilling with pushing of product pipes at the same time; drilling with welded steel pipes).
Max. OD 1280 mm (50.39")
Ground and ground water conditions:
Unguided: All soils and rock up to consistency classes FZ 2 and FD 2 according to DIN 18319. Stones with a grain diameter ≤ 1/3 OD can be conveyed.
Guided: Displaceable soils of the classes LNE 1 to 3, LNW 1 to 3, LBM 1 to 3 and LBO 1 to 3 according to DIN 18319 up to SPT ≤ 35. Operable under ground water. Single stones up to a max. graining of approx. 80/120 mm (3.15"/4.7") can be conveyed during the reamer drilling.
Unguided: up to 50 m (164 ft)
Guided: up to 120 m (393 ft)