21/30400331 DC

This standard 21/30400331 DC BS ISO 23991. Irrigation applications of ductile iron pipelines. Product design and installation is classified in these ICS categories:

• 23.040.10 Iron and steel pipes
• 77.140.75 Steel pipes and tubes for specific use

This International Standard specifies the design factor, technical requirements, test methods, installation technologies and operation advices applicable to ductile iron pipes, fittings and accessories used in piped irrigation applications.

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

Joint design and gasket shapes are outside the scope of this International Standard.

This International Standard applies to pipes, fittings and accessories cast by any type of foundry process or manufactured by fabrication of cast components.