4427 Polyethylene (PE) Pipes for Water Supply SpecificationsThis International standard specifies the required properties of pipes made from polyethylene (PE) to be used for underground water mains and services and for water supply above ground both inside and outside buildings. In addition, it specifies some general properties of the material from which these pipes are made, including a classification scheme.This International Standard applies to pipes with a nominal pressure of PN 3,2, PN 4, PN 6, PN 8, PN 10, PN 12, 5 and PN 16, and nominal outside diameters from 16 to 1600 (see ISO 161 1), intended to be used for the conveyance of water under pressure at temperatures between 0oC and 40oC for general purposes, as well as for the supply of drinking water.If PE pipes are used above ground, they should preferably be physically protected against UV light in accordance with recommended practice.
