This European Standard specifies the requirements and associated test methods applicable to ductile iron pipes, fittings, accessories and their joints for the construction of drains and sewers outside buildings:- operating without pressure (gravity sewerage), or with positive or negative pressure (see Table 5);- to be installed below or above ground;- to convey surface water, domestic waste water and certain types of industrial effluents, either in separate systems or in combined systems.This European Standard applies to pipes, fittings and accessories which are:- manufactured with socketed, flanged or spigot ends;- normally delivered externally and interna