ISO 15494:2015

Overview

ISO 15494:2015 - Plastics piping systems for industrial applications specifies metric-series requirements for components (pipes, fittings, valves and joints) made from polybutene (PB), polyethylene (PE), polyethylene of raised temperature resistance (PE‑RT), crosslinked polyethylene (PE‑X) and polypropylene (PP). The standard applies to thermoplastic piping systems used in industrial applications above and below ground for conveying liquids, gases and solids in fluids. It sets out material, geometrical, mechanical, physical, chemical and performance requirements, plus marking, conformity and installation guidance.

Key technical topics and requirements

• Materials and material characteristics: requirements for PB, PE, PE‑RT, PE‑X and PP, including hydrostatic strength, chemical resistance and recyclability considerations.
• Component scope: pipes, fittings, valves, joints and joints with other plastic or non‑plastic materials where suitable.
• Mechanical characteristics: resistance to internal pressure, test pressure calculation for pipes/fittings/valves, and rapid crack propagation (RCP) considerations.
• Geometrical characteristics: mean outside diameters, wall thicknesses, tolerances, laying lengths, threads and joint dimensions.
• Physical, chemical and electrical characteristics: influence of UV, behaviour with conveyed fluids, and electrical properties where relevant.
• Performance, classification and marking: component classification, minimum marking requirements for pipes/fittings/valves, and declaration of conformity.
• Design and installation: informative guidance on system design, installation practices and compatibility (fusion and joint compatibility).
• Material‑specific annexes: normative annexes detail specific requirements for each material (Annex A - PB, B - PE, C - PE‑RT, D - PE‑X, E - PP) and informative design/installation guidance (Annex F).

Practical applications and who uses this standard

ISO 15494:2015 is intended for:

• Plant designers and engineers specifying industrial piping systems (chemical, power, mining, semiconductor, electroplating, water treatment, geothermal, fire‑fighting, agricultural production).
• Manufacturers and suppliers of thermoplastic pipes, fittings and valves for industrial use.
• Certification and inspection bodies, testing laboratories and procurement teams validating conformity and performance.
• Contractors and installers who need guidance on system compatibility, jointing and marking.

The standard helps ensure components withstand expected mechanical, thermal and chemical demands and comply with applicable national regulations (e.g., water treatment, fire behaviour, explosion risk).

Related standards

• ISO 10931 - PVDF piping systems for industrial applications.
• ISO 15493 - ABS, PVC‑U, PVC‑C piping systems for industrial applications. Note: Valves may also need to comply with other valve‑specific standards and national regulations.