Multilayer piping systems for hot and cold water installations inside buildings - Part 7: Guidance for the assessment of conformity (ISO/TS 21003-7:2019)

This document gives requirements and guidance for the assessment of conformity of compounds, products, and assemblies in accordance with the applicable part(s) of ISO 21003 intended to be included in the manufacturer's quality plan as part of the quality management system and for the establishment of certification procedures.
In conjunction with the other parts of ISO 21003 (see Foreword), this document is applicable to multilayer piping systems intended to be used for hot and cold water installations within buildings for the conveyance of water, whether or not intended for human consumption (domestic systems) and for heating systems, under design pressures and temperatures appropriate to the class of application (see ISO 21003-1:2008, Table 1).

Mehrschichtverbund-Rohrleitungssysteme für die Warm- und Kaltwasserinstallation innerhalb von Gebäuden - Teil 7: Empfehlungen für die Beurteilung der Konformität (ISO/TS 21003-7:2019)

Dieses Dokument enthält Anforderungen und Empfehlungen für die Beurteilung der Konformität von Formmassen, Produkten und Bauteilkombinationen, die, in Übereinstimmung mit den/dem entsprechenden Teil(en) von ISO 21003, als Teil des Qualitätsmanagementsystems im Qualitätssicherungsplan des Herstellers und für die Erstellung von Zertifizierungsverfahren vorgesehen sind.
Zusammen mit den übrigen Teilen von ISO 21003 (siehe Vorwort) gilt dieses Dokument für Mehrschichtverbund-Rohrleitungssysteme, die in der Warm  und Kaltwasserinstallation innerhalb von Gebäuden für die Durchleitung von Trink  oder Brauchwasser (Hausinstallation) sowie für Heizungsanlagen unter Berücksichtigung des betreffenden Systembetriebsdrucks und der für die jeweilige Anwendungs¬klasse geltenden Temperaturen (siehe ISO 21003 1:2008, Tabelle 1) eingesetzt werden.

Systèmes de canalisations multicouches pour installations d'eau chaude et froide à l'intérieur des bâtiments - Partie 7: Guide pour l'évaluation de la conformité (ISO/TS 21003-7:2019)

Večslojni cevni sistemi za napeljave z vročo in hladno vodo v stavbah - 7. del: Navodilo za ugotavljanje skladnosti (ISO/TS 21003-7:2019)

Ta dokument vsebuje priporočila in navodila za ugotavljanje skladnosti zmesi, izdelkov in sestavov z ustreznimi deli standarda ISO 21003, ki naj bi se vključila v poslovnik kakovosti proizvajalca kot del sistema vodenja kakovosti, vsebuje pa tudi navodila za vzpostavitev postopka certificiranja.
Ta dokument se v povezavi z drugimi deli standarda ISO 21003 (glej predgovor) uporablja za večslojne cevne sisteme v napeljavah z vročo in hladno vodo za prenos pitne in nepitne vode v stavbah (gospodinjski sistemi) ter za sisteme ogrevanja glede na predvidene tlake in temperature, ki ustrezajo razredu uporabe (glej standard ISO 21003-1:2008, preglednica 1).

General Information

Status
Published
Publication Date
28-May-2019
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
29-May-2019
Completion Date
29-May-2019

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SLOVENSKI STANDARD
SIST-TS CEN ISO/TS 21003-7:2019
01-september-2019
Nadomešča:
SIST-TS CEN ISO/TS 21003-7:2009
SIST-TS CEN ISO/TS 21003-7:2009/A1:2010
Večslojni cevni sistemi za napeljave z vročo in hladno vodo v stavbah - 7. del:
Navodilo za ugotavljanje skladnosti (ISO/TS 21003-7:2019)

Multilayer piping systems for hot and cold water installations inside buildings - Part 7:

Guidance for the assessment of conformity (ISO/TS 21003-7:2019)
Mehrschichtverbund-Rohrleitungssysteme für die Warm- und Kaltwasserinstallation

innerhalb von Gebäuden - Teil 7: Empfehlungen für die Beurteilung der Konformität

(ISO/TS 21003-7:2019)

Systèmes de canalisations multicouches pour installations d'eau chaude et froide à

l'intérieur des bâtiments - Partie 7: Guide pour l'évaluation de la conformité (ISO/TS

21003-7:2019)
Ta slovenski standard je istoveten z: CEN ISO/TS 21003-7:2019
ICS:
23.040.01 Deli cevovodov in cevovodi Pipeline components and
na splošno pipelines in general
91.140.60 Sistemi za oskrbo z vodo Water supply systems
SIST-TS CEN ISO/TS 21003-7:2019 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TS CEN ISO/TS 21003-7:2019
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SIST-TS CEN ISO/TS 21003-7:2019
CEN ISO/TS 21003-7
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
May 2019
TECHNISCHE SPEZIFIKATION
ICS 23.040.20; 91.140.60 Supersedes CEN ISO/TS 21003-7:2008
English Version
Multilayer piping systems for hot and cold water
installations inside buildings - Part 7: Guidance for the
assessment of conformity (ISO/TS 21003-7:2019)

Systèmes de canalisations multicouches pour Mehrschichtverbund-Rohrleitungssysteme für die

installations d'eau chaude et froide à l'intérieur des Warm- und Kaltwasserinstallation innerhalb von

bâtiments - Partie 7: Guide pour l'évaluation de la Gebäuden - Teil 7: Empfehlungen für die Beurteilung

conformité (ISO/TS 21003-7:2019) der Konformität (ISO/TS 21003-7:2019)

This Technical Specification (CEN/TS) was approved by CEN on 28 March 2019 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to

submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS

available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in

parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN ISO/TS 21003-7:2019 E

worldwide for CEN national Members.
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SIST-TS CEN ISO/TS 21003-7:2019
CEN ISO/TS 21003-7:2019 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST-TS CEN ISO/TS 21003-7:2019
CEN ISO/TS 21003-7:2019 (E)
European foreword

This document (CEN ISO/TS 21003-7:2019) 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.

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.

This document supersedes CEN ISO/TS 21003-7:2008.

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, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO/TS 21003-7:2019 has been approved by CEN as CEN ISO/TS 21003-7:2019 without any

modification.
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SIST-TS CEN ISO/TS 21003-7:2019
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SIST-TS CEN ISO/TS 21003-7:2019
TECHNICAL ISO/TS
SPECIFICATION 21003-7
Second edition
2019-04
Multilayer piping systems for hot
and cold water installations inside
buildings —
Part 7:
Guidance for the assessment of
conformity
Systèmes de canalisations multicouches pour installations d'eau
chaude et froide à l'intérieur des bâtiments —
Partie 7: Guide pour l'évaluation de la conformité
Reference number
ISO/TS 21003-7:2019(E)
ISO 2019
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SIST-TS CEN ISO/TS 21003-7:2019
ISO/TS 21003-7:2019(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
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ISO/TS 21003-7:2019(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Abbreviated terms and symbols .......................................................................................................................................................... 4

4.1 Abbreviated terms ............................................................................................................................................................................... 4

4.2 Symbols ......................................................................................................................................................................................................... 5

5 General ............................................................................................................................................................................................................................ 5

6 Testing and inspection ................................................................................................................................................................................... 5

6.1 Grouping ....................................................................................................................................................................................................... 5

6.1.1 General...................................................................................................................................................................................... 5

6.1.2 Pressure groups ................................................................................................................................................................ 5

6.1.3 Size groups ............................................................................................................................................................................ 6

6.1.4 Fitting groups ..................................................................................................................................................................... 6

6.2 Type testing ............................................................................................................................................................................................... 6

6.3 Batch release test ...............................................................................................................................................................................15

6.4 Process verification tests (PVTs) ..........................................................................................................................................16

6.5 Audit tests (AT) ....................................................................................................................................................................................17

6.6 Indirect testing (IT)..........................................................................................................................................................................17

6.7 Test records.............................................................................................................................................................................................18

Annex A (informative) Interchangeability of different material grades — Testing of

alternative material grades for a layer in a multilayer M-pipe (second sourcing) .......................19

Bibliography .............................................................................................................................................................................................................................31

© ISO 2019 – All rights reserved iii
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ISO/TS 21003-7:2019(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 on 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 the following

URL: www .iso .org/iso/foreword .html.

This document was prepared by the European Committee for Standardization (CEN) Technical

Committee CEN/TC 155, Plastics piping systems and ducting systems, in collaboration with ISO Technical

Committee TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee SC 2,

Plastics pipes and fittings for water supplies, in accordance with the Agreement on technical cooperation

between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO/TS 21003-7:2008), which has been

technically revised. It also incorporates the Amendment ISO/TS 21003-7:2008/Amd1: 2010.

The major technical changes are:
— New definition of the terms “material”, “material grade” and “compound”;
— Revision of 6.2 “type testing”;

— Addition of Annex A "Interchangeability of different material grades — Testing of an alternative

material grades for a layer in a Multilayer M-Pipe (second sourcing)”.
A list of all parts in the ISO 21003 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 2019 – All rights reserved
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ISO/TS 21003-7:2019(E)
Introduction

This document can be used to support elaboration of national third party certification procedures for

products conforming to the applicable part(s) of ISO 21003.

This document is a part of a System Standard for plastics piping systems of a particular material for a

specified application. There are a number of such System Standards.

At the date of publication of this document, System Standards for piping systems of other plastics

materials used for the same application are the following:

— ISO 15874, Plastics piping systems for hot and cold water installations — Polypropylene (PP)

— ISO 15875, Plastics piping systems for hot and cold water installations — Crosslinked polyethylene (PE-X)

— ISO 15876, Plastics piping systems for hot and cold water installations — Polybutene (PB)

— ISO 15877, Plastics piping systems for hot and cold water installations — Chlorinated poly (vinyl

chloride) (PVC-C)

— ISO 22391, Plastics piping systems for hot and cold water installations — Polyethylene of raised

temperature resistance (PE-RT)

They are supported by separate standards on test methods to which references are made throughout

the System Standard.

The System Standards are consistent with general standards on functional requirements and on

recommended practice for installation.

Figures 1 and 2 are intended to provide general information on the concept of testing and organisation

of those tests used for the purpose of the assessment of conformity. For each type of test, i.e. type testing

(TT), batch release test (BRT), process verification test (PVT), and audit test (AT), this document details

the applicable characteristics to be assessed as well as the frequency and sampling of testing.

A typical scheme for the assessment of conformity of materials, compounds, pipes, fittings, valves,

joints or assemblies by product manufacturers is given in Figure 1

Figure 1 — Typical scheme for the assessment of conformity by a product manufacturer

A typical scheme for the assessment of conformity of compounds, pipes, fittings, joints or assemblies by

manufacturers, including certification, is given in Figure 2.
© ISO 2019 – All rights reserved v
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ISO/TS 21003-7:2019(E)

Figure 2 — Typical scheme for the assessment of conformity by product a manufacturer,

including certification.
vi © ISO 2019 – All rights reserved
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SIST-TS CEN ISO/TS 21003-7:2019
TECHNICAL SPECIFICATION ISO/TS 21003-7:2019(E)
Multilayer piping systems for hot and cold water
installations inside buildings —
Part 7:
Guidance for the assessment of conformity
1 Scope

This document gives requirements and guidance for the assessment of conformity of compounds,

products, and assemblies in accordance with the applicable part(s) of ISO 21003 intended to be included

in the manufacturer’s quality plan as part of the quality management system and for the establishment

of certification procedures.

In conjunction with the other parts of ISO 21003 (see Foreword), this document is applicable to

multilayer piping systems intended to be used for hot and cold water installations within buildings for

the conveyance of water, whether or not intended for human consumption (domestic systems) and for

heating systems, under design pressures and temperatures appropriate to the class of application (see

ISO 21003-1:2008, Table 1).
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 17456, Plastics piping systems — Multilayer pipes — Determination of long-term strength

ISO 21003-1, Multilayer piping systems for hot and cold water installations inside buildings — Part 1: General

ISO 21003-2, Multilayer piping systems for hot and cold water installations inside buildings — Part 2: Pipes

ISO 21003-3, Multilayer piping systems for hot and cold water installations inside buildings — Part 3:

Fittings

ISO 21003-5, Multilayer piping systems for hot and cold water installations inside buildings — Part 5:

Fitness for purpose of the system
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 21003-1, ISO 21003-3 and the

following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http: //www .electropedia .org/
— ISO Online browsing platform: available at http: //www .iso .org/obp
© ISO 2019 – All rights reserved 1
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ISO/TS 21003-7:2019(E)
3.1
certification body

impartial body, governmental or non-governmental, possessing the necessary competence and

responsibility to carry out certification of conformity according to given rules of procedure and

management

Note 1 to entry: A certification body is preferably compliant with ISO/IEC 17065.

3.2
inspection body
body that performs inspection

Note 1 to entry: An inspection body can be an organization, or part of an organization.

[3]
Note 2 to entry: An inspection body is preferably compliant with ISO/IEC 17020 .
[3]
[SOURCE: ISO/IEC 17020:2012 , 3.5]
3.3
testing laboratory

laboratory which measures, tests, calibrates or otherwise determines the characteristics of the

performance of materials and products

Note 1 to entry: A testing laboratory is preferably compliant with ISO/IEC 17025.

3.4
quality management system
part of a management system with regard to quality
[1]

Note 1 to entry: Requirements for quality management systems are given in ISO 9001 .

[6]
[SOURCE: ISO 9000:2015 , 3.5.4, modified — Note 1 to entry has been added]
3.5
quality plan

document setting out the specific quality practices, resources and sequence of activities relevant to a

particular product or range of products
3.6
type testing

testing performed to prove that the compound, component, product, joint or assembly is capable of

conforming to the requirements given in the relevant standard

Note 1 to entry: The type test results remain valid until there is a change in the compound or product or assembly

provided that the process verification tests are done regularly.
3.7
batch release test
BRT

test performed by or on behalf of the manufacturer on a batch of material compound, components or

products, which has to be satisfactorily completed before the batch can be released

3.8
process verification test
PVT

test performed by or on behalf of the product manufacturer on compounds, components, products or

joints at specific intervals to confirm that the process continues to be capable of producing components

and products which conform to the requirements given in the relevant standard

Note 1 to entry: Such tests are not required to release batches of materials, compound, components or products

and are carried out as a measure of process control
2 © ISO 2019 – All rights reserved
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ISO/TS 21003-7:2019(E)
3.9
audit test

test performed by a test laboratory on behalf of an inspection body or certification body to confirm

that the material, compound, components, product, joint or assembly continues to conform to the

requirements given in the relevant standard and to provide information to assess the effectiveness of

the quality management system
3.10
indirect test

test performed by or on behalf of the manufacturer, different from that specified test for that particular

characteristic, having previously verified its correlation with the specified test

3.11
witness test

test accepted by an inspection or a certification body for type testing and/or audit testing, which is

carried out by or on behalf of the manufacturer and supervised by a representative of the inspection or

certification body, qualified in testing
3.12
material

composition grouped by families, expressed by generic names used in material standards, e.g. PP-H, PB-

R, PE-RT Type II, PE-Xa, aluminium alloy type 8006
3.13
material grade
material with a defined specification from a material manufacturer
3.14
alternative material grade

material grade available for the production of a multilayer pipe, but different from the one used in the

type test (second sourcing)

Note 1 to entry: The pipe manufacturer might have alternative material grades for the inner layer, inner adhesive

layer, metal layer, outer adhesive layer and/or outer layer of the multilayer pipe.

3.15
compound

clearly defined homogenous mixture of base polymer with additives, i.e. antioxidants, pigments, stabilizers

and others, at a dosage level necessary for the processing and the intended use of the final product

3.16
batch of material grade

clearly identified quantity of a given homogeneous materials or compound manufactured under

uniform conditions and defined and identified by the materials or compound manufacturer

3.17
product

pipe, fitting, or valve of a clearly identified type intended to be a part of a piping system, which the

manufacturer puts on the market
3.18
product batch

clearly identified collection of units or products, manufactured consecutively or continuously under the

same conditions, using the same compounds conforming to the same specifications

Note 1 to entry: The production batch is defined and identified by the product manufacturer.

© ISO 2019 – All rights reserved 3
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ISO/TS 21003-7:2019(E)
3.19
lot
clearly identifiable sub-division of a batch for inspection purposes
3.20
sample

one or more units or products drawn from the same production batch or lot, selected at random without

regard to their quality
Note 1 to entry: The number of products in the sample is the sample size.
3.21
group

collection of similar components from which samples are selected for testing purposes

3.22
component

product manufactured out of a specific material or compound, brought to the market as part of another

product or as a spare part

Note 1 to entry: For drinking water application, components may be considered as products and be individually

approved (e.g. o-ring, gasket) or they are tested as an integral part of a product (e.g. in a valve).

3.23
joint
connection between two or more products
3.24
assembly/assembled product
product consisting of two or more parts
3.25
sampling plan

specific plan, which defines the test and the number of units or products or assemblies to be inspected

3.26
product type
generic description of a product

EXAMPLE A pipe or fitting or valve or their main parts, of the same design, from a particular compound.

3.27
cavity
space within a mould to be filled to form the moulded product

EXAMPLE That part of an injection mould which gives the form to the injection-moulded product.

4 Abbreviated terms and symbols
4.1 Abbreviated terms

To avoid misunderstanding, the abbreviated terms in this clause are defined as being the same in each

language. For the same reason, the terms are given in the three languages, English, French and German.

EN FR DE
AT audit test essai d’audit Überwachungsprüfung
essai de libération de campagne de fab-
BRT batch release test Freigabeprüfung einer Charge
rication
IT indirect test essai indirect indirekte Prüfung
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ISO/TS 21003-7:2019(E)
EN FR DE
essai de vérification du procédé de fab-
PVT process verification test Prozessüberprüfung
rication
TT type test essai de type Typprüfung
WT witness testing essai témoin Prüfung unter Aufsicht
4.2 Symbols
I Material grade used in the inner layer of the initial type-tested M-pipe

Ai Material grade used in the inner adhesive layer of the initial type-tested M-pipe

M Material grade used in the metal layer of the initial type-tested M-pipe

Ao Material grade used in the outer adhesive layer of the initial type-tested M-pipe

O Material grade used in the outer layer of the initial type-tested M-pipe
I Alternative material grade to be introduced in the inner layer
Ai Alternative material grade to be introduced in the inner adhesive layer
M Alternative material grade to be introduced in the metal layer
Ao Alternative material grade to be introduced in the outer adhesive layer
O Alternative material grade to be introduced in the outer layer
5 General

Compounds, products and assemblies shall conform to the requirements given of ISO 21003 (all parts).

Products and assemblies shall be produced by the manufacturer under a quality management system,

which includes a quality plan.
6 Testing and inspection
6.1 Grouping
6.1.1 General
For the purposes of this document, the groups specified in 6.1.2 to 6.1.4 apply.
6.1.2 Pressure groups
Two pressure groups are defined, as given in Table 1.
Table 1 — Pressure groups
Pressure group Operating pressure, p
bar
1 4; 6
2 8; 10
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ISO/TS 21003-7:2019(E)
6.1.3 Size groups
Three size groups are defined for pipes and fittings, as given in Table 2.
Table 2 — Size groups
Size group Nominal diameter, d
1 10 ≤ d ≤ 26
2 26 < d ≤ 63
3 d > 63
6.1.4 Fitting groups
Two groups of fittings having a similar design are defined, as given in Table 3.
Table 3 — Fitting groups
Fitting group Type of fitting
1 Elbows, tees, reducers, couplers, end caps
Unions, flange adaptors, transition fitting, adaptor pieces
and/or their plastics parts and others
6.2 Type testing

Relevant TTs shall be carried out on new systems and whenever there is a change in design, compound,

production site or production method, other than routine in-process adjustments, and/or whenever

there is an extension of the product range.

Type tests shall demonstrate that the products conform to all requirements for the characteristics

given in Table 6 to Table 10, as applicable.

Conditions considered as leading to a change of compound (M) of M-pipes and P-pipes are given in

Tables 4 and 5. Tables 4 and 5 offer a wide range of changes.
NOTE 1
— Example 1: A change of the inner layer material from PE-Xa to PERT Type II

— Example 2: A change of the metal layer material from an aluminium alloy type 8006 to a different aluminium

alloy type or even to a steel alloy.

— Example 3: A change of a material grade used for the inner layer to another material grade from another raw

material supplier.

The relevant characteristics to be tested in case of change of compound of M-pipes and P-pipes are

given in Tables 6, 7 and 10 i
...

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