NEN ISO 9349 : 2017

Describes requirements and test methods applicable to preinsulated ductile iron pipes, fittings, accessories and their joints for the construction of pipelines (or parts thereof): to convey water (e.g. potable water), wastewater and other liquids; - to be operated with or without pressure; - to be installed below or above ground; - to limit temperature variations of the conveyed fluids.