The reason for the joint initiative of Buderus and TRACTO-TECHNIK was the clearly expanding interest for the installation of ductile iron pipes using the trenchless installation method.
The ductile iron pipes have advantages, especially for drinking water suppliers, because of their cement mortar housings. They are especially suitable for high operating pressures and really impress with their long service life and corrosive consistency of 140 years.
For the trenchless installation of these ductile iron pipes TT offers the HDD bore method, the pipe cracking method and the cable plow method for the ductile iron pipe installation. This enables a nominal width range to be covered from 80 to 1000 mm.
This is an interesting recess, where we would like to get more strongly involved” commented Manfred Hoffmann, head of the Buderus export department.
With over 70 participants involved, the response was much higher than expected. Björn Freimuth, TT specialist for pipe cracking: “We did expect 20 visitors at the most.” According to him the strong interest is down to the Buderus handbook for the trenchless installation of ductile iron pipes, which was issued at the end of 2007, distributed in German and English and valued as a really useful guidebook.
The main part of the info day were the practical demonstrations on TT's own test site. One excited participant commented: “You don’t get to see this everyday. The demonstrations have really impressed me immensely.”
The HDD bore rig GRUNDODRILL 25 N which installed the ductile iron pipe ND 100 was on show. The pipe bursting rig GRUNDOBURST 400G cut open an old steel pipe with a roller blade and simultaneously pulled in a ductile iron pipe ND 100. In order to demonstrate the pipe cracking technology more vividly the work was carried out on the surface in this case.