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.
NOTE — In this International Standard, all pressures are relative pressures expressed in bars.
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.
note :1) 100 kPa=1 bar
ISO 2531:1998 history
2010ISO 2531:2009/cor 1:2010 Ductile iron pipes, fittings, accessories and their joints for water applications; Technical Corrigendum 1
2009ISO 2531:2009 Ductile iron pipes, fittings, accessories and their joints for water applications
1998ISO 2531:1998 Ductile iron pipes, fittings, accessories and their joints for water or gas applications
1991ISO 2531:1991 Ductile iron pipes, fittings and accessories for pressure pipelines
1986ISO 2531:1986 Ductile iron pipes, fittings and accessories for pressure pipelines
1980ISO 2531:1979/Add 1:1980 Ductile iron pipes, fittings and accessories for pressure pipe-lines — Addendum 1
1979ISO 2531:1979 Ductile iron pipes, fittings and accessories for pressure pipe-lines
1974ISO 2531:1974 Title missing - Legacy paper document