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This International Standard specifies the requirements for polyethylene (PE) pipes, fittings and piping systems intended for use for non-pressure underground drainage and sewerage for the conveyance of soil and waste discharge of domestic and industrial origin, as well as surface water. It covers buried pipework, as well as piping systems buried within the building structure. In the case of industrial discharge, it is necessary that the chemical and temperature resistance be taken into account, but this will need to be done separately. This International Standard is applicable to PE pipes with or without an integral socket. NOTE Fittings can be manufactured by injection-moulding or fabricated from pipes and/or mouldings. This International Standard is applicable to PE pipes and fittings for the following types of joints: ? elastomeric ring seal joints; ? butt-fused joints; ? electrofusion joints; ? mechanical joints. This International Standard also specifies the test parameters for the test methods referred to herein.