Our ductile cast iron pipes (according to DIN EN 545) have been successfully used for decades in the Swiss drinking water supply and ensure that the No. 1 foodstuff «drinking water» reaches the end consumer safely and unchanged. From pipe laying up to comprehensive services, we take care of the complete supply of the water infrastructure of households, cities as well as municipalities and work closely with them. Thanks to simple installation and flexible pipe laying, our cast iron pipes and fittings have proven their worth even in densely populated residential areas. To ensure the maintenance of the infrastructure, we carry out regular checks of the water quality, prepare loss analyses and carry out leak detection. Our vonRoll hydro hydrants and valves are also an integral part of the water supply. As a leading supplier in Switzerland, our experts carry out regular on-site inspections and performance data recording. The water supply and fire brigade can rely on a functioning environment in case of emergency.

Natural gas is an established energy source in Switzerland and is made permanently available to users in urban areas via an underground distribution network. Our ductile cast iron piping system and our valve products, such as gate valves and butterfly valves, are used in large parts of the Swiss gas supply network and convince through safety, functionality and durability. Due to the robust material and the corrosion-resistant coating (e.g. PUR corrosion protection or integral epoxy coating), our pipe systems are even suitable for aggressive and rocky soil conditions and meet all requirements for a safe and efficient gas supply. Every year, our vonRoll service technicians inspect a large part of the Swiss pipeline network and prepare detailed documentation of the location of leaks.

The use of snow-making equipment and thus ensuring that ski slopes are practicable are direct prerequisites for winter sports resorts to guarantee snow reliability as an economic factor for regions dependent on winter sports. The basic prerequisite for the proper functioning of a snow-making system is a safe water supply that can withstand all the demands of high mountain regions.

The robustness of the material and the movable socket system, together with the fact that it is quick and easy to install and lay, have made Duktus the world market leader in pipes and fittings for snow-making systems. Our Duktus pipes have a service life of more than 50 years and guarantee maximum safety for operating pressures up to 100 bar.

As specialists in the manufacture of cast iron pipes with decades of experience, we have a sophisticated range of products with pipes, fittings and the BLS® joint in one piece (DN 80 to DN 500). We have a well-stocked warehouse and can also supply our products worldwide at short notice. All Duktus pipes are tested in accordance with EN standards and certified to ISO 9001. Our specialists advise customers right from the planning stage and carry out installation training courses which enable ductile cast iron pipes to be laid quickly and in an ecologically sustainable manner. These advantages make our Duktus pipe system the most technically and economically efficient pipe system on the market, enabling laying rates of up to 400 m a day to be achieved.

Our vonRoll hydro construction castings range covers all areas of drainage technology. We offer system solutions for structural and civil engineering, building services, tunnel drainage and environmental protection. Our products are traffic safe, ergonomic, durable and economical, tested according to EN standards and available for various load classes.

Our portfolio includes manhole covers for public and private road construction as well as step covers that can be used flexibly even for manholes with limited space, such as in the banquet area of tunnels. We supply drainage channels as well as surface covers and offer a wide range of road gratings and bridge drains. The latter are suitable for installation on bridges, terraces, ramps and squares. Thanks to the direct concreting of the cups, the drains drain the bridge structure already during the construction phase.

Our ductile cast iron pipes systems are installed in heavily populated residential areas and cities, in where trenchless laying techniques are used to protect people and the environment from traffic obstructions and noise The flexible connection system and the external protection of our pipes make it possible to lay them in a way that is both economical and environmentally friendly.

Since 2007, more than 30 000 m of cast iron pipes (DN 80 to DN 300) with BLS® joints and a cement mortar coating from Duktus have been successfully laid in the Berlin area using the press-draw process. In recent years approx. 10 000 m of ductile cast iron pipes were installed in Switzerland using this method. In the flush drilling process, our Duktus pipes hold the world record for the largest culvert made of ductile cast iron pipes: in 2007, a pipe string (DN 900) was laid over a length of about 500 m in Valencia, Spain. Our pipe system can be laid using various trenchless installation techniques and offers essential Benefits for sustainable infrastructures.

Safety is paramount, because in tunnels the outbreak of a fire or changes in the statics are particularly to be feared and efficient protective mechanisms are of immense importance. The basic prerequisite for successful fire fighting are functioning extinguishing water pipes.

Our Duktus cast iron pipes offer important advantages for this purpose: The pipe system can withstand operating pressures of up to 100 bar and has three times the safety of the pipe wall and 1.5 times the safety of the connection systems. The extinguishing water pipes are made of pipe material which guarantees fire resistance for 60 min. at 900° C. Our cast iron pipes have a high mechanical strength as well as tensile strength and bendable connections. In order to control the safety of tunnel constructions and to protect people and the environment from dangers, we carry out extensive measuring tests, such as crack protocols, expansion measurements and position shifts. Among other things, our ALTECNO LoRa measuring points in the Gubrist tunnel (northern bypass of the A1 motorway in Zurich) permanently monitor any possible displacements in the rock structure at around 70 locations.

For us, safe construction monitoring is part of the vonRoll hydro corporate culture and has absolute priority. Our VONROLL HYDRO products are used in regions that require high safety measures due to local conditions.

Our cast iron pipes are drawn in on impassable mountainous stretches as well as in tunnel construction projects where space is severely restricted. In order to avoid dangers to people and the environment, we carry out continuous metrological monitoring and evaluate the structures of buildings. Our ALTECNO data logger and LoRa measuring points are designed for monitoring tasks, both for temporary and permanent installations. We carry out measurement tasks such as crack monitoring, inclination monitoring, vibration measurements and position shifts and continuously monitor the existing infrastructure around the construction site.

Extreme weather conditions, unstable terrain, risk of corrosion, seismological activity, high pressure – all these elements must be withstood by our pipes and tubes in the Mining segment. That is why the highest quality, long service life and sustainability are our top priorities.

The products of our DUKTUS brand transport liquids such as fresh and process water, residues – so-called tailings – or mineral concentrates for mining customers all over the world. We support our partners along the entire chain in the supply and hydraulic positioning of pipes and accessories. The installation of systems for seawater desalination plants and surface water collection in mining is based on highly complex processes. The technical and geological conditions require pipes of the highest quality and stability as well as great abrasion and corrosion resistance.

Their quality is continuously clarified by standardised test norms. They are ideally suited as pipes for transporting acidic and soft waters and the Duktus product family not only reduces the costs of transporting mining materials but also guarantees a long service life. The portfolio is rounded off with pipe and concentrate high-pressure pipes for transporting mineral concentrate by wet means.