ISO 11296-2:2018

Overview

ISO 11296-2:2018 - "Plastics piping systems for renovation of underground non-pressure drainage and sewerage networks - Part 2: Lining with continuous pipes" defines requirements and test methods for polyethylene (PE) continuous pipe lining used to renovate underground non-pressure drainage and sewerage systems. Used together with ISO 11296-1 (General), it specifies material, geometric, mechanical and physical characteristics of pipes and fittings, jointing practice and site verification for systems installed as continuous pipes.

Key topics and requirements

• Scope: Applies to three PE pipe types:
  • Solid wall single-layer PE pipes (dn),
  • PE pipes with co-extruded layers (all layers with same MRS, Annex A),
  • PE coated pipes with a peelable thermoplastic outer layer (Annex A).
• Material and performance: Pipes must conform to PE material and property requirements referenced to ISO 8772.
• Jointing: Jointing of pipe lengths is by butt fusion; fittings include fabricated and injection‑moulded PE components. All butt fusions are to be externally de‑beaded and, if required, internally de‑beaded.
• Marking and identification: Pipes and coatings must be marked per ISO 11296-1 or ISO 8772; coated pipes should be clearly distinguishable in service (e.g., colour bands).
• Installation and site verification: Covers preparatory work, handling, equipment (butt‑fusion and electrofusion units, de‑beading tools, pipe rollers, winching/rod-pulling, entry guides, inspection and lifting equipment), installation procedures, process-related inspection/testing, lining termination and reconnection, and final documentation.
• Stages of assessment: Addresses verification of characteristics both “as manufactured” (M stage) and “as installed” (I stage) to ensure fitness for purpose after site processing.

Applications and practical value

• Renovation (rehabilitation) of underground non‑pressure drainage and sewerage pipelines using continuous PE pipe lining techniques.
• Typical users:
  • Municipal utilities and wastewater asset owners specifying rehabilitation works.
  • Engineering and design consultants preparing project specifications.
  • Pipe manufacturers and lining contractors who must meet material, jointing and installation requirements.
  • Quality assurance inspectors and test laboratories performing site verification and acceptance testing.
• Practical benefits: Provides a harmonized framework for material selection, jointing practice (butt fusion), installation equipment, and post‑installation verification - reducing project risk and improving long‑term performance of renewed sewerage networks.

Related standards

• ISO 11296-1:2018 (General requirements)
• ISO 8772 (PE piping for non-pressure drainage and sewerage)
• ISO 12176-1 / ISO 12176-2 (fusion equipment - butt fusion, electrofusion)
• EN 12666-1 and other parts of the ISO 11296 series (Parts 3–10 cover alternative lining methods)

Keywords: ISO 11296-2:2018, plastics piping systems, continuous pipe lining, polyethylene (PE), butt fusion, sewerage network renovation, non-pressure drainage.