Ductile iron, obtained by a special magnesium treatment, has an elastic behaviour which confers outstanding mechanical properties upon the metal. All the water supply castings, pipes and fittings, that are made of ductile iron can benefit from its outstanding mechanical properties. Being extremely tough and robust, they can withstand high external loading and changes in their environment without damage: ie, ground movements, pipe undermining or bedding destabilisation, without fracturing, cracking or disjointing.
The mechanical properties of ductile iron, combined with flexible rubber gasket joints, have resulted in the development of robust, flexible pipe systems, capable of withstanding the operating conditions or adverse site conditions without damage. Ductile iron pipes now constitute the best engineered offer in the market for medium-and large-diameter pipes. Above and beyond the mechanical properties of ductile iron, they are able to withstand, not only high continuous service regimes, but also any overpressures and water hammer, without deterioration or effect on the life of the installation.