When building new pipe networks or renovating existing ones, conventional open pipe trenches in urban areas often push the limits of what is feasible. In order to avoid large-scale traffic obstructions in conurbations, trenchless pipe construction methods began to be developed 30 years ago.
Benefits of laying ductile iron pipes without trenches:
Very short assembly times
Enables small start and target pits
Single pipe installation means no elongated construction-site installation areas are necessary
Joints can be stressed immediately after assembly
Allows very high tensile forces compared to other materials for even better safety!
Tensile forces independent of temperature and pull-in time
ZMU-Austria offers protection against mechanical and chemical attacks
High ring and longitudinal rigidity ensures unlimited service life even in conditions with poor support
Shards of the old pipe material and stones are not a problem
Trenchless technologies, with VRS®-T restrained locking systems, cement-mortar coatings, sheet metal cones and sleeve protection, have a lot to offer for renewal or new installation.
Pipe relining (pulled or pushed)
Horizontal directional drilling (HDD)
Auxiliary pipe method
Ploughing and milling
3,100 tons of CO2 savings
by feeding the waste heat into the district heating network
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