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This technology allows the replacement of an existing pipe made of already damaged or non performing materials (steel, cast iron, gres, cement, cement-asbestos, PVC) by insertion, from the starting point to the arrival point, of a hydraulically actuated rods system, which are fastened to a sharp tool (conical ogive) that breaks up the existing pipe by compressing the fragments and simultaneously inserting the new pipe, which is then inserted into the existing pipe.

This type of technology allows to increase the diameter of the pipe that is replaced: the order of magnitude is a max increase of one diameter.

The technology allows the execution of an averages of 80 - 150 m and is mainly used for the renewal of water and sewage networks.


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Gruppo Sarplast S.r.l. - Via Rosignanina, 32 - 56040 Santa Luce - Pisa - Italia