SIST EN ISO 16486-2:2020
(Main)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 16486-2:2020)
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 16486-2:2020)
This part of ISO 16486 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.
ISO 16486 is applicable to PA-U piping systems the components of which are connected by fusion jointing and/or mechanical jointing.
In addition, it lays down dimensional characteristics and requirements for the marking of pipes.
Pipes conforming to this part of ISO 16486 are jointed typically by using mechanical, electrofusion or butt fusion (see Annex A) techniques, but not by solvent cement jointing.
Kunststoff-Rohrleitungssysteme für die Gasversorgung - Rohrleitungssysteme aus weichmacherfreiem Polyamid (PA-U) mit Schweißverbindungen und mechanischen Verbindungen - Teil 2: Rohre (ISO 16486-2:2020)
Dieses Dokument legt die physikalischen und mechanischen Eigenschaften von Rohren fest, die nach ISO 16486 1 aus weichmacherfreiem Polyamid (PA-U) hergestellt sind, die unterirdisch verlegt und für die Gasversorgung verwendet werden. Es spezifiziert ebenso die Prüfparameter für die Prüfverfahren, auf die es sich bezieht.
Die Normenreihe ISO 16486 gilt für PA-U-Rohrleitungssysteme, deren Komponenten durch Schweiß-verbindungen und/oder mechanische Verbindungen zusammengefügt werden.
Außerdem legt dieses Dokument Maßeigenschaften und Anforderungen an die Kennzeichnung von Rohren fest.
Rohre, die diesem Dokument entsprechen, werden üblicherweise unter Verwendung von mechanischen, Elektroschweiß- 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 (ISO 16486-2:2020)
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 de normes 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.
De plus, ce 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 (ISO 16486-2:2020)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 16486-2:2020
01-december-2020
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 (ISO
16486-2:2020)
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-
2:2020)
Kunststoff-Rohrleitungssysteme für die Gasversorgung - Rohrleitungssysteme aus
weichmacherfreiem Polyamid (PA-U) mit Schweißverbindungen und mechanischen
Verbindungen - Teil 2: Rohre (ISO 16486-2:2020)
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 (ISO 16486-
2:2020)
Ta slovenski standard je istoveten z: EN ISO 16486-2:2020
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
SIST EN ISO 16486-2:2020 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 16486-2:2020
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SIST EN ISO 16486-2:2020
EN ISO 16486-2
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2020
EUROPÄISCHE NORM
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 (ISO
16486-2:2020)
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 (ISO
Partie 2: Tubes (ISO 16486-2:2020) 16486-2:2020)
This European Standard was approved by CEN on 4 September 2020.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a 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 European Standard 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, Turkey 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16486-2:2020 E
worldwide for CEN national Members.
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SIST EN ISO 16486-2:2020
EN ISO 16486-2:2020 (E)
Contents Page
European foreword . 3
2
---------------------- Page: 4 ----------------------
SIST EN ISO 16486-2:2020
EN ISO 16486-2:2020 (E)
European foreword
This document (EN ISO 16486-2:2020) has been prepared by Technical Committee ISO/TC 138
"Plastics pipes, fittings and valves for the transport of fluids" in collaboration with Technical Committee
CEN/TC 155 “Plastics piping systems and ducting systems” the secretariat of which is held by NEN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2021, and conflicting national standards shall be
withdrawn at the latest by April 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: 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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 16486-2:2020 has been approved by CEN as EN ISO 16486-2:2020 without any
modification.
3
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SIST EN ISO 16486-2:2020
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SIST EN ISO 16486-2:2020
INTERNATIONAL ISO
STANDARD 16486-2
Second edition
2020-09
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 la distribution
de combustibles gazeux — Systèmes de canalisations en polyamide
non plastifié (PA-U) avec assemblages par soudage et assemblages
mécaniques —
Partie 2: Tubes
Reference number
ISO 16486-2:2020(E)
©
ISO 2020
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SIST EN ISO 16486-2:2020
ISO 16486-2:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 16486-2:2020
ISO 16486-2:2020(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
3.2 Abbreviated terms . 2
4 Compound . 2
5 General characteristics . 2
5.1 Appearance . 2
5.2 Colour . 3
5.3 Fusion compatibility . 3
6 Geometrical characteristics . 3
6.1 Measurement of dimensions . 3
6.2 Mean outside diameters, out-of-roundness and their tolerances . 3
6.3 Wall thicknesses and tolerances . 4
6.3.1 Minimum wall thickness . 4
6.3.2 Tolerances on wall thickness at any point . 5
7 Mechanical characteristics . 6
7.1 Conditioning . 6
7.2 Requirements . 6
8 Physical characteristics . 8
8.1 Conditioning . 8
8.2 Requirements . 8
9 Marking . 9
Annex A (normative) Squeeze-off technique .10
Annex B (informative) Examples of the water uptake over time as a function of the sample
thickness .11
Bibliography .14
© ISO 2020 – All rights reserved iii
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SIST EN ISO 16486-2:2020
ISO 16486-2:2020(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves
for the transport of fluids, Subcommittee SC 4, Plastics pipes and fittings for the supply of gaseous fuels,
in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/
TC 155, Plastics piping systems and ducting systems, in accordance with the Agreement on technical
cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 16486-2:2012), which has been
technically revised. It also incorporates ISO 16486-2:2012/Amd 1: 2014.
The main changes compared to the previous edition are as follows:
— Tables 1 and 2 are extended with nominal outside diameters up to and including 630 mm;
— In Table 2, former 6 hours has been changed to 16 hours in line with the phrasing in the table header;
— In Table 3, the range for the minimum wall thickness is extended up to and including 37 mm;
— Table 4 allows for e > 12 mm to use Type 3 specimen with 10 mm/min for the determination of the
elongation at break;
— Informative Annex A – Butt fusion procedure for jointing PA-U pipes – has been deleted;
— A new normative Annex A – Squeeze-off technique – has been added;
— A new informative Annex B – Examples of the water uptake over time as a function of the sample
thickness – has been added.
A list of all parts in the ISO 16486 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2020 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 16486-2:2020
ISO 16486-2:2020(E)
Introduction
This document specifies the requirements for a piping system and its components made from
unplasticized polyamide (PA-U), which is intended to be used for the supply of gaseous fuels.
Requirements and test methods for material and components, other than pipes of the piping system are
specified in ISO 16486-1, ISO 16486-3, and ISO 16486-4.
Characteristics for fitness for purpose of the system and generic fusion parameters are covered in
ISO 16486-5.
Recommended practice for installation is given in ISO 16486-6, which will not be implemented as a
European Standard under the Vienna Agreement.
1)
Assessment of conformity of the system is to form the subject of ISO/TS 16486-7 .
NOTE Recommended practice for installation is also given in CEN/TS 12007-6, which has been prepared by
Technical Committee CEN/TC 234, Gas infrastructure.
Parts 1, 2 (this document), 3, 5 and 6 (and future Part 7) of the ISO 16486 series have been prepared by
ISO/TC 138/SC4. Part 4 has been prepared by ISO/TC 138/SC 7.
1) Under preparation. Stage at the time of publication: ISO/WD TS 16486-7:2020.
© ISO 2020 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST EN ISO 16486-2:2020
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SIST EN ISO 16486-2:2020
INTERNATIONAL STANDARD ISO 16486-2:2020(E)
Plastics piping systems for the supply of gaseous fuels —
Unplasticized polyamide (PA-U) piping systems with fusion
jointing and mechanical jointing —
Part 2:
Pipes
1 Scope
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 of standards is applicable to PA-U piping systems, the components of which are
connected by fusion jointing and/or mechanical jointing.
In addition, 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.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 291, Plastics — Standard atmospheres for conditioning and testing
ISO 307, Plastics — Polyamides — Determination of viscosity number
ISO 1133-2, Plastics — Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR)
of thermoplastics — Part 2: Method for materials sensitive to time-temperature history and/or moisture
ISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination of
the resistance to internal pressure — Part 1: General method
ISO 1167-2, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination of
the resistance to internal pressure — Part 2: Preparation of pipe test pieces
ISO 2505, Thermoplastics pipes — Longitudinal reversion — Test method and parameters
ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions
ISO 6259-1, Thermoplastics pipes — Determination of tensile properties — Part 1: General test method
ISO 6259-3, Thermoplastics pipes — Determination of tensile properties — Part 3: Polyolefin pipes
ISO 11922-1, Thermoplastics pipes for the conveyance of fluids — Dimensions and tolerances — Part 1:
Metric series
ISO 12176-4, Plastics pipes and fittings — Equipment for fusion jointing polyethylene systems — Part 4:
Traceability coding
© ISO 2020 – All rights reserved 1
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SIST EN ISO 16486-2:2020
ISO 16486-2:2020(E)
ISO 13477, Thermoplastics pipes for the conveyance of fluids — Determination of resistance to rapid crack
propagation (RCP) — Small-scale steady-state test (S4 test)
ISO 13479, Polyolefin pipes for the conveyance of fluids — Determination of resistance to crack
propagation — Test method for slow crack growth on notched pipes
ISO 16486-1:2020, Plastics piping systems for the supply of gaseous fuels — Unplasticized polyamide (PA-
U) piping systems with fusion jointing and mechanical jointing — Part 1: General
EN 12106, Plastics piping systems - Polyethylene (PE) and crosslinked polyethylene (PE-X) pipes - Test
method for the resistance to internal pressure after application of squeeze-off
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 16486-1 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: a
...
SLOVENSKI STANDARD
oSIST prEN ISO 16486-2:2019
01-december-2019
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
(ISO/DIS 16486-2:2019)
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/DIS
16486-2:2019)
Kunststoff-Rohrleitungssysteme für die Gasversorgung - Rohrleitungssysteme aus
weichmacherfreiem Polyamid (PA-U) mit Schweißverbindungen und mechanischen
Verbindungen - Teil 2: Rohre (ISO/DIS 16486-2:2019)
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 (ISO/DIS
16486-2:2019)
Ta slovenski standard je istoveten z: prEN ISO 16486-2
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
oSIST prEN ISO 16486-2:2019 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN ISO 16486-2:2019
---------------------- Page: 2 ----------------------
oSIST prEN ISO 16486-2:2019
DRAFT INTERNATIONAL STANDARD
ISO/DIS 16486-2
ISO/TC 138/SC 4 Secretariat: NEN
Voting begins on: Voting terminates on:
2019-10-25 2020-01-17
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 la distribution de combustibles gazeux — Systèmes
de canalisations en polyamide non plastifié (PA-U) avec assemblages par soudage et assemblages
mécaniques —
Partie 2: Tubes
ICS: 83.140.30; 75.200
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 16486-2:2019(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2019
---------------------- Page: 3 ----------------------
oSIST prEN ISO 16486-2:2019
ISO/DIS 16486-2:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 16486-2:2019
ISO/DIS 16486-2:2019(E)
Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Compound . 2
5 General Characteristics . 2
5.1 Appearance . 2
5.2 Colour . 2
5.3 Fusion compatibility . 2
6 Geometrical characteristics . 3
6.1 Measurement of dimensions . 3
6.2 Mean outside diameters, out-of-roundness and their tolerances . 3
6.3 Wall thicknesses and tolerances . 4
6.3.1 Minimum wall thickness . 4
6.3.2 Tolerances on wall thickness at any point . 4
7 Mechanical characteristics . 5
7.1 Conditioning . 5
7.2 Requirements . 5
8 Physical characteristics . 8
8.1 Conditioning . 8
8.2 Requirements . 8
9 Marking . 8
Annex A (normative) Squeeze-off technique .10
Annex B (informative) Examples of the water uptake over time as function of the sample
thickness .11
Bibliography .13
© ISO 2019 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST prEN ISO 16486-2:2019
ISO/DIS 16486-2:2019(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for
the transport of fluids, Subcommittee SC 4, Plastics pipes and fittings for the supply of gaseous fuels.
This second edition cancels and replaces the first edition (ISO 16486-2:2012), which has been
technically revised.
The main changes compared to the previous edition are as follows:
— Tables 1 and 2 are extended with nominal outside diameters up to and including 630 mm;
— In Table 2 former 6 hours has been changed to 16 hours in line with the phrasing on top of the table
— In Table 3 the range for the minimum wall thickness is extended up to and including 37 mm;
— Table 4 allows for e > 12 mm to use Type 3 specimen with 10 mm/min for the determination of the
elongation at break;
— Informative Annex A – Butt fusion procedure for jointing PA-U pipes – was deleted and referenced;
— A new normative Annex A – Squeeze of technique – is included;
— A new informative Annex B – Water uptake over time as function of the sample thickness – is
included.
ISO 16486 consists of the following parts, under the general title Plastics piping systems for the supply
of gaseous fuels — Unplasticized polyamide (PA-U) piping systems with fusion jointing and mechanical
jointing:
Part 1: General
Part 2: Pipes
Part 3: Fittings
iv © ISO 2019 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 16486-2:2019
ISO/DIS 16486-2:2019(E)
Part 4: Valves
Part 5: Fitness for purpose of the system
Part 6: Code of practice for design, handling and installation
Part 7: Assessment of conformity of the system (proposal in preparation).
A list of all parts in the ISO 16486 series can also be found on the ISO website.
Parts 1, 2 (this document), 3, 5 and 6 have been prepared by ISO/TC 138/SC 4, and a future part 7:
Assessment of conformity is under preparation. Part 4 has been prepared by Technical Committee
ISO/TC138/SC 7 Valves and auxiliary equipment of plastics materials.
Part 6 will not be implemented as European Standard under the Vienna Agreement.
NOTE Future CEN/TS 12007-x, Gas infrastructure — Pipelines for maximum operating pressure up to and
including 16 bar — Part x: Design, handling, installation and operation of unplasticized polyamide (PA-U) piping
systems with fusion joining and mechanical jointing - Functional recommendation, to be prepared by Technical
Committee CEN/TC234 Gas infrastructure will deal with the recommended practice for installation of plastics
pipes system in accordance with EN ISO 16486 (all parts except for part 6).
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
© ISO 2019 – All rights reserved v
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oSIST prEN ISO 16486-2:2019
ISO/DIS 16486-2:2019(E)
Introduction
This part of ISO 16486 specifies the requirements for a piping system and its components made from
unplasticized polyamide (PA-U), and which is intended to be used for the supply of gaseous fuels.
Requirements and test methods for material and components, other than pipes of the piping system are
specified in ISO 16486-1, ISO 16486-3, and ISO 16486-4.
Characteristics for fitness for purpose of the system and generic fusion parameters are covered in
ISO 16486-5.
Recommended practice for installation is given in ISO 16486-6, which will not be implemented as
European Standard under the Vienna Agreement. Recommended practice for installation will be given
in future CEN/TS 12007-x, Gas infrastructure — Pipelines for maximum operating pressure up to and
including 16 bar — Part x: Design, handling, installation and operation of unplasticized polyamide (PA-U)
piping systems with fusion joining and mechanical jointing - Functional recommendation, that is under
preparation by Technical Committee CEN/TC234 Gas infrastructure.
This part of ISO 16486 covers the characteristics of pipes.
Assessment of conformity of the system is to form the subject of a future part 7.
vi © ISO 2019 – All rights reserved
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oSIST prEN ISO 16486-2:2019
DRAFT INTERNATIONAL STANDARD ISO/DIS 16486-2:2019(E)
Plastics piping systems for the supply of gaseous fuels —
Unplasticized polyamide (PA-U) piping systems with fusion
jointing and mechanical jointing —
Part 2:
Pipes
1 Scope
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 addition, it lays down dimensional characteristics and requirements for the marking of pipes.
Pipes conforming to this part of ISO 16486 are jointed typically by using mechanical, electrofusion or
butt fusion (see Annex A) techniques, but not by solvent cement jointing.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 291, Plastics — Standard atmospheres for conditioning and testing
ISO 307, Plastics — Polyamides — Determination of viscosity number
ISO 1110, Plastics — Polyamides — Accelerated conditioning of test specimens
ISO 1133-2, Plastics — Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR)
of thermoplastics — Part 2: Method for materials sensitive to time-temperature history and/or moisture
ISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination of
the resistance to internal pressure — Part 1: General method
ISO 1167-2, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination of
the resistance to internal pressure — Part 2: Preparation of pipe test pieces
ISO 2505, Thermoplastics pipes — Longitudinal reversion — Test method and parameters
ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions
ISO 6259-1, Thermoplastics pipes — Determination of tensile properties — Part 1: General test method
ISO 6259-3, Thermoplastics pipes — Determination of tensile properties — Part 3: Polyolefin pipes
ISO 11922-1, Thermoplastics pipes for the conveyance of fluids — Dimensions and tolerances — Part 1:
Metric series
© ISO 2019 – All rights reserved 1
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oSIST prEN ISO 16486-2:2019
ISO/DIS 16486-2:2019(E)
ISO 12176-4, Plastics pipes and fittings — Equipment for fusion jointing polyethylene systems — Part 4:
Traceability coding
ISO/DIS 12176-5, Plastics pipes and fittings – Equipment for fusion jointing polyethylene systems Part 5:
Two-dimensional data coding of components for PE piping systems
...
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