scope:

This Standard specifies requirements for ductile iron pressure pipes centrifugally cast in moulds, and ductile iron fittings of nominal sizes up to and including DN 750.

NOTE 1 Ductile iron is also known as spheroidal graphite iron, SG iron or nodular graphite iron.

The specified pipes and fittings are intended primarily for conveying water under pressure, but may be used for conveying sewage or other liquids.

Fittings covered by this Standard are intended primarily for use with water supply pressure pipes.

NOTE 2 Fittings are also used in non-metallic pipeline systems.

NOTE 3 Fittings may also be used with pressure pipes of alternative outside diameters by the adoption of compatible sockets or utilization of compensating elastomeric seals, provided the joint meets the performance requirements of this Standard. Ductile iron spigots should not be inserted into plastic pipe sockets.

This Standard specifies pressure classifications of pipe on the basis of the allowable operating pressure (AOP); however, Flange Class (FLCL) pipe has been specified for manufacture of flanged pipe with screw-on flanges.