EN 598 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;-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 technical report:-explains in more detail the process of testing for the performance tests;-explains in more detail the benefits of high alumina cement lining;-explains in more detail the definitions of the different types/levels of attestation to enable customers to ensure their requirements are fulfilled;-explains in more detail the ways of certification of conformity with EN 598 for a reliable evaluation of the performance of products;-explains in more detail CE marking and its relevance i.e. the CE mark is not a mark of conformity with a standard but only a self-declaration concerning the CPD essential requirements.In order to make the use of this Technical Report easier, the clauses of this document refer to the corresponding clause numbers in EN 598.