EN ISO 16486-2:2024/A11:2025

Plastics piping systems for the supply of gaseous fuels - Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing - Part 2: Pipes

This document specifies the physical and mechanical properties of pipes made from unplasticized polyamide (PA-U) in accordance with ISO 16486-1, intended to be buried and used for the supply of gaseous fuels.
It also specifies the test parameters for the test methods to which it refers.
The ISO 16486 series is applicable to PA-U piping systems, the components of which are connected by fusion jointing and/or mechanical jointing.
In particular, this document lays down dimensional characteristics and requirements for the marking of pipes.
Pipes conforming to this document are jointed typically by using mechanical, electrofusion or butt fusion techniques.

Kunststoff-Rohrleitungssysteme für die Gasversorgung - Rohrleitungssysteme aus weichmacherfreiem Polyamid (PA-U) mit Schweißverbindungen und mechanischen Verbindungen - Teil 2: Rohre

Dieses Dokument legt die physikalischen und mechanischen Eigenschaften von Rohren fest, die nach ISO 16486 1 aus weichmacherfreiem Polyamid (PA U) hergestellt und dafür vorgesehen sind, unterirdisch verlegt und für die Gasversorgung verwendet zu werden.
Es legt auch die Prüfparameter für die Prüfverfahren fest, auf die es sich bezieht.
Die Normenreihe ISO 16486 ist anwendbar für PA U Rohrleitungssysteme, deren Komponenten durch Schweißverbindungen und/oder mechanische Verbindungen zusammengefügt werden.
Dieses Dokument legt insbesondere Maßeigenschaften und Anforderungen an die Kennzeichnung von Rohren fest.
Rohre, die diesem Dokument entsprechen, werden üblicherweise unter Verwendung von mechanischen, Heizwendelschweiß  oder Stumpfschweißtechniken zusammengefügt.

Systèmes de canalisations en matières plastiques pour la distribution de combustibles gazeux - Systèmes de canalisations en polyamide non plastifié (PA-U) avec assemblages par soudage et assemblages mécaniques - Partie 2: Tubes

Le présent document spécifie les propriétés physiques et mécaniques des tubes en polyamide non plastifié (PA-U) conformément à l’ISO 16486-1, destinés à être enterrés et utilisés pour la distribution de combustibles gazeux.
Il spécifie également les paramètres d’essai pour les méthodes d’essai auxquelles il fait référence.
La série ISO 16486 s’applique aux systèmes de canalisations en PA-U dont les composants sont raccordés par des assemblages par soudage et/ou par des assemblages mécaniques.
En particulier, le présent document définit les caractéristiques dimensionnelles et les exigences pour le marquage des tubes.
Les tubes conformes au présent document sont généralement assemblés par des techniques mécaniques, par électrosoudage ou par soudage bout à bout.

Cevni sistemi iz polimernih materialov za oskrbo s plinastimi gorivi - Cevni sistemi iz nemehčanega poliamida (PA-U) z zvari in mehanskimi spoji - 2. del: Cevi - Dopolnilo A11

Ta dokument določa fizikalne in mehanske lastnosti cevi iz nemehčanega poliamida (PA-U) v skladu s standardom ISO 16486-1, ki so predvidene za vkop in uporabo za namene oskrbe s plinastimi gorivi. Določa tudi preskusne parametre za preskusne metode, na katere se sklicuje. Skupina standardov ISO 16486 se uporablja za cevne sisteme iz nemehčanega poliamida, sestavni deli katerih so povezani z zvari in/ali mehanskimi spoji. Ta dokument zlasti določa dimenzijske lastnosti in zahteve za označevanje cevi. Cevi, ki so skladne s tem dokumentom, so običajno spojene z mehanskimi tehnikami, elektrofuzijo ali soležnim taljenjem.

General Information

• Status: Published
• Publication Date: 29-Jul-2025
• ICS: 75.200 - Petroleum products and natural gas handling equipment
• ICS: 83.140.30 - Plastics pipes and fittings for non fluid use
• Technical Committee: CEN/TC 155 - Plastics piping systems and ducting systems
• Drafting Committee: CEN/TC 155/WG 34 - Polyamid piping systems for gas supply
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 30-Jul-2025
• Due Date: 26-Oct-2027
• Completion Date: 30-Jul-2025
• Ref Project: SIST EN ISO 16486-2:2025/A11:2025 - Plastics piping systems for the supply of gaseous fuels - Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing - Part 2: Pipes

Relations

• Amends: EN ISO 16486-2:2024 - Plastics piping systems for the supply of gaseous fuels - Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical jointing - Part 2: Pipes (ISO 16486‑2:2024)
• Effective Date: 25-Jun-2025

Overview

The standard EN ISO 16486-2:2024/A11:2025 defines specifications for unplasticized polyamide (PA-U) pipes used in plastic piping systems dedicated to the supply of gaseous fuels. Developed by the European Committee for Standardization (CEN), this document is an amendment to Part 2 of ISO 16486 and sets out the essential physical and mechanical properties of PA-U pipes intended primarily for buried installations. These pipes form part of systems connected through fusion jointing and mechanical jointing techniques.

This standard covers critical aspects such as dimensional characteristics, marking requirements, and testing parameters to ensure the performance and safety of piping systems deployed in gas distribution networks. It is designed to complement Part 1 of ISO 16486, which lays down more general requirements for PA-U piping systems.

Key Topics

• Material Specification: Requirements for unplasticized polyamide (PA-U) used in manufacturing pipes that deliver gaseous fuels, focusing on durability and chemical resistance.
• Mechanical Properties: Criteria establishing the strength, flexibility, and pressure resistance of PA-U pipes to withstand various operational conditions underground.
• Dimensional Requirements: Standardized pipe dimensions essential for compatibility and reliable jointing with fusion or mechanical connection methods.
• Marking and Identification: Guidelines on the labeling and traceability of pipes for easy identification and compliance verification during installation and maintenance.
• Test Parameters: Defined testing methods and parameters aimed at validating the physical and mechanical attributes of PA-U pipes, ensuring consistent quality.
• Jointing Compatibility: Specifications supporting pipe connection using mechanical joints, electrofusion, or butt fusion fusion techniques, facilitating versatility in installation practices.

Applications

EN ISO 16486-2:2024/A11:2025 is critically applied in the design and construction of safe, reliable plastic piping systems for the distribution of gaseous fuels such as natural gas and other combustible gases in residential, commercial, and industrial environments. Its primary applications include:

• Buried gas supply networks: Ensures safe transportation of gaseous fuels underground, protecting against environmental factors and mechanical stresses.
• Gas distribution infrastructure: Used by utilities and contractors in building or upgrading pipelines that require durable, corrosion-resistant piping materials.
• Industrial gas pipelines: Suitable for factory and plant settings where mechanically and fusion-jointed PA-U pipes offer chemical inertness and performance reliability.
• Energy sector installations: Adoption in petrochemical and energy facilities with strict adherence to safety and quality standards.

This standard supports the development of piping systems that minimize leakage risks and optimize the service life of gas distribution components.

Related Standards

EN ISO 16486-2:2024/A11:2025 complements several related standards that collectively regulate plastics piping systems for gaseous fuels:

• ISO 16486-1: General specifications for PA-U piping systems, providing overall system requirements and material considerations.
• EN ISO 1127: Stainless steel tubes - dimensions and tolerances, relevant for some jointing components.
• EN 1555 Series: Plastics piping systems for gas supply, particularly polyethylene (PE) systems.
• National Standards: Several countries may have specific national regulations or deviations (e.g., Italy’s UNI 9034) that adapt this European standard to local requirements for gas system safety.

By aligning installations with EN ISO 16486-2 and complementary standards, stakeholders ensure that plastic piping systems for gaseous fuels meet rigorous safety, quality, and performance criteria.

---

Keywords: unplasticized polyamide pipes, PA-U piping systems, gaseous fuels piping, fusion jointing, mechanical jointing, plastics piping standard, underground gas piping, gas distribution pipelines, CEN standard, EN ISO 16486-2, pipe dimensional standards, gas supply infrastructure, polyethylene alternatives

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2025
Cevni sistemi iz polimernih materialov za oskrbo s plinastimi gorivi - Cevni sistemi
iz nemehčanega poliamida (PA-U) z zvari in mehanskimi spoji - 2. del: Cevi -
Dopolnilo A11
Plastics piping systems for the supply of gaseous fuels - Unplasticized polyamide (PA-U)
piping systems with fusion jointing and mechanical jointing - Part 2: Pipes
Kunststoff-Rohrleitungssysteme für die Gasversorgung - Rohrleitungssysteme aus
weichmacherfreiem Polyamid (PA-U) mit Schweißverbindungen und mechanischen
Verbindungen - Teil 2: Rohre
Systèmes de canalisations en matières plastiques pour la distribution de combustibles
gazeux - Systèmes de canalisations en polyamide non plastifié (PA-U) avec
assemblages par soudage et assemblages mécaniques - Partie 2: Tubes
Ta slovenski standard je istoveten z: EN ISO 16486-2:2024/A11:2025
ICS:
75.200 Oprema za skladiščenje Petroleum products and
nafte, naftnih proizvodov in natural gas handling
zemeljskega plina equipment
83.140.30 Polimerne cevi in fitingi za Plastics pipes and fittings for
snovi, ki niso tekočine non fluid use
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 16486-
EUROPEAN STANDARD
2:2024/A11
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2025
ICS 75.200; 83.140.30
English Version
Plastics piping systems for the supply of gaseous fuels -
Unplasticized polyamide (PA-U) piping systems with
fusion jointing and mechanical jointing - Part 2: Pipes
Systèmes de canalisations en matières plastiques pour Kunststoff-Rohrleitungssysteme für die Gasversorgung
la distribution de combustibles gazeux - Systèmes de - Rohrleitungssysteme aus weichmacherfreiem
canalisations en polyamide non plastifié (PA-U) avec Polyamid (PA-U) mit Schweißverbindungen und
assemblages par soudage et assemblages mécaniques - mechanischen Verbindungen - Teil 2: Rohre
Partie 2: Tubes
This amendment A11 modifies the European Standard EN ISO 16486-2:2024; it was approved by CEN on 11 June 2025.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any
...