Expanders - expandig the bore without modification

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Use expanders for larger diameters without any modification.

The TERRA-HAMMER is designed to use expanders without any modification.

First do your pilot bore with your TERRA-HAMMER mole.

In a second operation you can expand the pilot bore to larger diameters. The ground must be displaceable.



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TERRA AG für Tiefbautechnik - Hauptstrasse 92 - 6260 Reiden - Schweiz - Tel. +41 62 749 10 10 - office@terra-eu.eu