scope:

This Standard specifies the requirements and 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 pressure up to 16 bar - to be installed below or above ground. This standard specifies requirements for materials, dimensions and tolerances, mechanical properties and standard surface protection of ductile iron pipes and fittings. It also indicates 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, of a size range extending from DN 40 to DN 600 inclusive. This standard applies to pipes, fittings and accessories which are: - manufactured with socketed, flange or plain ends for jointing by means of various types of gaskets (which are not within the scope of this standard), - normally delivered internally and externally coated, - suitable for gas temperatures between -15°C and 50°C.