ISO 2531:1998 PDF

This International Standard specifies the requirements and test methods applicable to ductile iron pipes, fittings, accessories and their joints for the construction of pipelines

• to convey water (e.g. potable water) or gas;
• operated with or without pressure;
• installed below or above ground.

This International Standard gives specifications for materials, dimensions and tolerances, mechanical properties and standard coatings of pipes, fittings and accessories. It also gives performance requirements for all components including joints.

This International Standard covers pipes, fittings and accessories cast by any type of foundry process or manufactured by fabrication of cast components, as well as corresponding joints, of a size range extending from DN 40 to DN 2 600 inclusive.

It is applicable to pipes, fittings and accessories which are

• manufactured with socketed, flanged or spigot ends for jointing by means of various types of gaskets which are not within the scope of this International Standard;
• normally delivered internally and externally coated.