This European Standard specifies the requirements and associated test methods applicable to ductile iron pipes, fittings, accessories and their joints for the construction of pipelines:
—to convey air or combustible gases (e.g. natural gas or town gas) at pressures up to 16 bar;
—to be installed below or above ground.
NOTE 1 A combustible gas is a gas or any fuel that is in gaseous state at a temperature of 15 ℃ at a pressure of 1 bar.
NOTE 2 In this standard, all pressures are relative pressures expressed in bars (100 kPa = 1 bar).
This standard specifies requirements for materials, dimensions and tolerances, mechanical properties and standard coatings of ductile iron pipes and fittings. It also gives performance requirements for all components including joints.
This 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, in a size range extending from DN 40 to DN 600 inclusive.
This standard applies 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 standard;
—normally delivered externally and internally coated;
—suitable for gas temperatures between - 15 ℃ and 50 ℃.
BS EN 969:1996 history
2009BS EN 969:2009 Ductile iron pipes, fittings, accessories and their joints for gas pipelines - Requirements and test methods
1996BS EN 969:1996 Specification for ductile iron pipes, fittings, accessories and their joints for gas pipelines - Requirements and test methods
0000 BS EN 545:1995
1988BS 4772:1988 Specification for ductile iron pipes and fittings
0000 BS 4772:1980
1966BS 2035:1966 Specification for cast iron flanged pipes and flanged fittings
1965BS 78-2:1965 Specification for cast iron spigot and socket pipes (vertically cast) and spigot and socket fittings - Fittings
1958BS 1211:1958 Specification for centrifugally cast (spun) iron pressure pipes for water, gas and sewage