SIST EN ISO 11296-7:2019

Plastics piping systems for renovation of underground non-pressure drainage and sewerage networks - Part 7: Lining with spirally-wound pipes (ISO 11296-7:2019)

This document, in conjunction with ISO 11296-1, specifies requirements and test methods for pipes
which are formed on site by spirally winding and jointing a pre-manufactured profiled plastics strip,
or a profiled plastics strip and integral locking joiner strip, and used for the renovation of underground
non-pressure drainage and sewerage networks.
It applies to spirally-wound pipes of fixed or variable diameter made of profiled plastics strips, with or
without steel stiffening elements, and installed by one of two methods.
The first method employs a dedicated winding machine in front of the open end of an existing pipeline,
e.g. in a manhole. The pipes thus formed are simultaneously inserted into the existing pipeline by the
winding forces, and by certain techniques can also be expanded in diameter after or during insertion.
The second method employs a dedicated winding machine which forms the pipe as it traverses the
existing pipeline from one manhole to the next.
It applies to profiled plastics strips of unplasticized poly(vinyl chloride) (PVC U) with integral locking
mechanism, or of high density polyethylene (HDPE) with integrally welded joints.

Kunststoff-Rohrleitungssysteme für die Renovierung von erdverlegten drucklosen Entwässerungsnetzen (Freispiegelleitungen) - Teil 7: Wickelrohr-Lining (ISO 11296-7:2019)

Dieses Dokument legt in Verbindung mit ISO 11296 1 die Anforderungen und Prüfverfahren für Rohre fest, die durch spiralförmiges Wickeln und Verbinden eines vorgefertigten profilierten Kunststoff-Streifens oder eines profilierten Kunststoff-Streifens mit integriertem Verbindungsstreifen vor Ort hergestellt und für die Renovierung von erdverlegten drucklosen Entwässerungsnetzen verwendet werden.
Er gilt für Wickelrohre mit festgelegtem oder variablem Durchmesser, die aus profilierten Kunststoff-Streifen, mit oder ohne Versteifungselemente aus Stahl, bestehen und nach einem von zwei Verfahren eingebaut werden.
Beim ersten Verfahren wird eine dafür vorgesehene Wickelmaschine eingesetzt, die sich vor der Öffnung einer bereits bestehenden Rohrleitung, z. B. in einem Einsteigschacht, befindet. Die hierdurch hergestellten Rohre werden gleichzeitig durch die beim Wickeln wirkenden Kräfte in die bestehende Rohrleitung eingebracht und können mithilfe bestimmter Verfahren während des Einbringens oder nach dem Einbringen im Durchmesser aufgeweitet werden.
Beim zweiten Verfahren wird eine dafür vorgesehene Wickelmaschine eingesetzt, die das Rohr herstellt, während diese die bestehende Rohrleitung von einem Einsteigschacht zum nächsten durchquert.
Es gilt für profilierte Kunststoff-Streifen aus weichmacherfreiem Polyvinylchlorid (PVC U) mit integriertem Verbindungsmechanismus oder aus Polyethylen hoher Dichte (HDPE) mit integrierten Schweiß-verbindungen.

Systèmes de canalisations en plastique pour la rénovation des réseaux de branchements et de collecteurs d'assainissement enterrés sans pression - Partie 7: Tubage par enroulement hélicoïdal (ISO 11296-7:2019)

Le présent document, conjointement avec l'ISO 11296‑1, spécifie les exigences et les méthodes d'essai applicables aux tubages formés sur place par enroulement hélicoïdal et assemblage d'une bande profilée préfabriquée en plastique, ou d'une bande profilée en plastique et d'une bande d'assemblage à verrouillage intégral, et utilisés pour la rénovation de réseaux de branchements et de collecteurs d'assainissement enterrés sans pression.
Il s'applique aux tubages par enroulement hélicoïdal, de diamètre fixe ou variable, réalisés à partir de bandes profilées en plastique, avec ou sans éléments raidisseurs en acier, et installés en utilisant une parmi deux méthodes.
La première méthode fait intervenir une machine à enrouler spécifique devant l'extrémité ouverte d'une canalisation existante, par exemple, dans un regard. Les tubages ainsi formés sont insérés simultanément dans la canalisation existante par les forces d'enroulement et certaines techniques permettent d'en élargir le diamètre pendant ou après l'insertion.
La seconde méthode fait intervenir une machine à enrouler spécifique qui forme le tubage à mesure de sa progression à travers la canalisation existante d'un regard au regard suivant.
Il s'applique à des bandes profilées plastiques en PVC-U (polychlorure de vinyle non plastifié) munies d'un mécanisme de verrouillage intégral, ou en polyéthylène haute densité (HDPE) avec joints intégralement soudés.

Cevni sistemi iz polimernih materialov za obnovo podzemnih omrežij za odvodnjavanje in kanalizacijo za obratovanje brez tlaka (vodi s prosto gladino) - 7. del: Oblaganje s spiralnimi cevmi (ISO 11296-7:2019)

Ta dokument v povezavi s standardom ISO 11296-1 določa zahteve in preskusne metode za cevi, ki so oblikovane na mestu uporabe s spiralnim navijanjem oziroma spajanjem vnaprej izdelanega profiliranega plastičnega traku ali profiliranega plastičnega traku in integralnega zaskočnega spajalnega traku, ter se uporabljajo za obnovo podzemnih omrežij za odvodnjavanje in kanalizacijo za obratovanje brez tlaka.
Uporablja se za spiralne cevi s fiksnim ali spremenljivim premerom iz profiliranih plastičnih trakov, z ojačitvenimi jeklenimi elementi ali brez njih, ki so nameščene z eno od dveh metod.
Pri prvi metodi se uporablja namenski stroj za navijanje pred odprtim koncem obstoječega cevovoda, npr. v jašku. Tako oblikovane cevi se istočasno vstavijo v obstoječe cevovode s silami navijanja, po vstavljanju ali med njim pa jim je z določenimi tehnikami mogoče tudi razširiti premer. Pri drugi metodi se uporablja namenski stroj za navijanje, ki oblikuje cev, ko prečka obstoječi cevovod od enega jaška do naslednjega.
Uporablja se za profilirane plastične trakove iz neplastificiranega poli(vinilklorida) (PVC U) z integriranim zaskočnim mehanizmom ali iz polietilena visoke gostote (HDPE) z varjenimi spoji.

General Information

• Status: Published
• Public Enquiry End Date: 19-Mar-2018
• Publication Date: 17-Mar-2019
• ICS: 23.040.05 - Pipeline and its parts for external sewage systems
• ICS: 91.140.80 - Drainage systems
• ICS: 93.030 - External sewage systems
• Technical Committee: PCV - Plastic pipes, fittings and valves
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 22-Feb-2019
• Due Date: 29-Apr-2019
• Completion Date: 18-Mar-2019
• Ref Project: EN ISO 11296-7:2019 - Plastics piping systems for renovation of underground non-pressure drainage and sewerage networks - Part 7: Lining with spirally-wound pipes (ISO 11296-7:2019)

Relations

• Replaces: SIST EN ISO 11296-7:2013 - Plastics piping systems for renovation of underground non-pressure drainage and sewerage networks - Part 7: Lining with spirally-wound pipes (ISO 11296-7:2011)
• Effective Date: 01-Apr-2019

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 11296-7:2019
01-april-2019
1DGRPHãþD
SIST EN ISO 11296-7:2013
Cevni sistemi iz polimernih materialov za obnovo podzemnih omrežij za
odvodnjavanje in kanalizacijo za obratovanje brez tlaka (vodi s prosto gladino) - 7.
del: Oblaganje s spiralnimi cevmi (ISO 11296-7:2019)
Plastics piping systems for renovation of underground non-pressure drainage and
sewerage networks - Part 7: Lining with spirally-wound pipes (ISO 11296-7:2019)
Kunststoff-Rohrleitungssysteme für die Renovierung von erdverlegten drucklosen
Entwässerungsnetzen (Freispiegelleitungen) - Teil 7: Wickelrohr-Lining (ISO 11296-
7:2019)
Systèmes de canalisations en plastique pour la rénovation des réseaux de
branchements et de collecteurs d'assainissement enterrés sans pression - Partie 7:
Tubage par enroulement hélicoïdal (ISO 11296-7:2019)
Ta slovenski standard je istoveten z: EN ISO 11296-7:2019
ICS:
23.040.05 Cevovodi za zunanje Pipeline and its parts for
sisteme za odpadno vodo in external sewage systems
njihovi deli
91.140.80 Drenažni sistemi Drainage systems
93.030 Zunanji sistemi za odpadno External sewage systems
vodo
SIST EN ISO 11296-7:2019 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 11296-7:2019

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SIST EN ISO 11296-7:2019


EN ISO 11296-7
EUROPEAN STANDARD

NORME EUROPÉENNE

February 2019
EUROPÄISCHE NORM
ICS 23.040.20; 23.040.45; 91.140.80; 93.030 Supersedes EN ISO 11296-7:2013
English Version

Plastics piping systems for renovation of underground
non-pressure drainage and sewerage networks - Part 7:
Lining with spirally-wound pipes (ISO 11296-7:2019)
Systèmes de canalisations en plastique pour la Kunststoff-Rohrleitungssysteme für die Renovierung
rénovation des réseaux de branchements et de von erdverlegten drucklosen Entwässerungsnetzen
collecteurs d'assainissement enterrés sans pression - (Freispiegelleitungen) - Teil 7: Wickelrohr-Lining (ISO
Partie 7: Tubage par enroulement hélicoïdal (ISO 11296-7:2019)
11296-7:2019)
This European Standard was approved by CEN on 27 December 2018.

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, 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. EN ISO 11296-7:2019 E
worldwide for CEN national Members.

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SIST EN ISO 11296-7:2019
EN ISO 11296-7:2019 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 11296-7:2019
EN ISO 11296-7:2019 (E)
European foreword
This document (EN ISO 11296-7:2019) 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.
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 August 2019, and conflicting national standards shall
be withdrawn at the latest by August 2019.
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 EN ISO 11296-7:2013.
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 11296-7:2019 has been approved by CEN as EN ISO 11296-7:2019 without any
modification.

3

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SIST EN ISO 11296-7:2019

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SIST EN ISO 11296-7:2019
INTERNATIONAL ISO
STANDARD 11296-7
Second edition
2019-01
Plastics piping systems for renovation
of underground non-pressure
drainage and sewerage networks —
Part 7:
Lining with spirally-wound pipes
Systèmes de canalisations en plastique pour la rénovation des réseaux
de branchements et de collecteurs d'assainissement enterrés sans
pression —
Partie 7: Tubage par enroulement hélicoïdal
Reference number
ISO 11296-7:2019(E)
©
ISO 2019

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SIST EN ISO 11296-7:2019
ISO 11296-7:2019(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: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved

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SIST EN ISO 11296-7:2019
ISO 11296-7:2019(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms . 3
4.1 Symbols . 3
4.2 Abbreviated terms . 3
5 Pipes at the “M” stage . 3
5.1 Materials . 3
5.2 General characteristics . 4
5.3 Material characteristics . 4
5.4 Geometric characteristics . 5
5.5 Mechanical characteristics. 6
5.6 Physical characteristics . 6
5.7 Jointing . 6
5.8 Marking . 6
6 Fittings at the “M” stage . 7
7 Ancillary components . 7
8 Fitness for purpose of the installed lining system at the “I” stage .7
8.1 Materials . 7
8.2 General characteristics . 7
8.3 Material characteristics . 7
8.4 Geometric characteristics . 7
8.5 Mechanical characteristics. 7
8.6 Physical characteristics . 8
8.7 Additional characteristics . 8
8.8 Preparation of samples . 8
8.9 Adhesives . 8
9 Installation practice . 8
9.1 Preparatory work . 8
9.2 Storage, handling and transportation of profiled plastics strips and fittings . 8
9.3 Equipment . 8
9.4 Installation . 9
9.5 Process-related inspection and testing .10
9.6 Lining termination .10
9.7 Reconnecting to existing manholes and laterals .10
9.8 Final inspection and testing .10
9.9 Documentation .10
Annex A (normative) Spirally-wound pipe — Test method for watertightness in a deflected
condition .11
Annex B (informative) Examples of methods for reconnecting and sealing laterals to SWO pipe .14
Bibliography .16
© ISO 2019 – All rights reserved iii

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SIST EN ISO 11296-7:2019
ISO 11296-7:2019(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 Technical Committee ISO/TC 138 Plastics pipes, fittings and valves for
the transport of fluids, Subcommittee SC 8 Rehabilitation of pipeline systems.
This second edition cancels and replaces the first edition (ISO 11296-7:2011), which has been technically
revised. The following clause(s) have been revised:
— In 5.1, thermoplastics has been added as a separate seam sealant material category;
— In 5.3, the thickness range has been removed;
— In Table 2 the requirement for Modulus of Elasticity has been lowered to reflect current state of
the art;
— In Clause 6, ISO 10467 replaces EN 14364 as normative reference for GRP saddles;
— In 8.5, Table 6, ISO 13262 replaces EN 1979 for tensile testing of a locked seam.
A list of all parts in the ISO 11296 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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SIST EN ISO 11296-7:2019
ISO 11296-7:2019(E)

Introduction
This document is a part of a System Standard for plastics piping systems of various materials used for
the renovation of existing pipelines in a specified application area. System Standards for renovation
deal with the following applications:
— ISO 11296, Plastics piping systems for renovation of underground non-pressure drainage and sewerage
networks (this application);
— ISO 11297, Plastics piping systems for renovation of underground drainage and sewerage networks
under pressure;
— ISO 11298, Plastics piping systems for renovation of underground water supply networks;
— ISO 11299, Plastics piping systems for renovation of underground gas supply networks.
These System Standards are distinguished from those for conventionally installed plastics piping
systems by the requirement to verify certain characteristics in the “as-installed condition”, after site
processing. This is in addition to specifying requirements for plastics piping system components “as
manufactured”.
Each of the System Standards comprises a
— Part 1: General
and all applicable renovation technique family-related parts, which for non-pressure drainage and
sewerage networks include or potentially include the following:
— Part 2: Lining with continuous pipes;
— Part 3: Lining with close-fit pipes;
— Part 4: Lining with cured-in-place pipes;
— Part 5: Lining with discrete pipes;
— Part 7: Lining with spirally-wound pipes (this document);
— Part 8: Lining with pipe segments;
— Part 9: Lining with a rigidly anchored plastics inner layer;
— Part 10: Lining with sprayed polymeric materials.
The requirements for any given renovation technique family are specified in Part 1, applied in
conjunction with the relevant other part. For example, both ISO 11296-1 and this document together
specify the requirements relating to lining with spirally-wound pipes. For complementary information,
see ISO 11295. Not all technique families are pertinent to every area of application and this is reflected
in the part numbers included in each System Standard.
A consistent structure of clause headings has been adopted for all parts of ISO 11296, in order to
facilitate direct comparisons across renovation technique families.
Figure 1 shows the common part and clause structure and the relationship between ISO 11296 and the
System Standards for other application areas.
© ISO 2019 – All rights reserved v

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SIST EN ISO 11296-7:2019
ISO 11296-7:2019(E)

Figure 1 — Format of the renovation System Standards
vi © ISO 2019 – All rights reserved

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SIST EN ISO 11296-7:2019
INTERNATIONAL STANDARD ISO 11296-7:2019(E)
Plastics piping systems for renovation of underground
non-pressure drainage and sewerage networks —
Part 7:
Lining with spirally-wound pipes
1 Scope
This document, in conjunction with ISO 11296-1, specifies requirements and test methods for pipes
which are formed on site by spirally winding and jointing a pre-manufactured profiled plastics strip,
or a profiled plastics strip and integral locking joiner strip, and used for the renovation of underground
non-pressure drainage and sewerage networks.
It applies to spirally-wound pipes of fixed or variable diameter made of profiled plastics strips, with or
without steel stiffening elements, and installed by one of two methods.
The first method employs a dedicated winding machine in front of the open end of an existing pipeline,
e.g. in a manhole. The pipes thus formed are simultaneously inserted into the existing pipeline by the
winding forces, and by certain techniques can also be expanded in diameter after or during insertion.
The second method employs a dedicated winding machine which forms the pipe as it traverses the
existing pipeline from one manhole to the next.
It applies to profiled plastics strips of unplasticized poly(vinyl chloride) (PVC U) with integral locking
mechanism, or of high density polyethylene (HDPE) with integrally welded joints.
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 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
ISO 179-1, Plastics — Determination of Charpy impact properties — Part 1: Non-instrumented impact test
ISO 306, Plastics — Thermoplastic materials — Determination of Vicat softening temperature (VST)
ISO 527-1, Plastics — Determination of tensile properties — Part 1: General principles
ISO 527-2, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and
extrusion plastics
ISO 4427-3, Plastics piping systems — Polyethylene (PE) pipes and fittings for water supply — Part 3:
Fittings
ISO 4435, Plastics piping systems for non-pressure underground drainage and sewerage — Unplasticized
poly(vinyl chloride) (PVC-U)
ISO 4948-2, Steels — Classification — Part 2: Classification of unalloyed and alloy steels according to main
quality classes and main property or application characteristics
ISO 6259-1, Thermoplastics pipes — Determination of tensile properties — Part 1: General test method
© ISO 2019 – All rights reserved 1

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SIST EN ISO 11296-7:2019
ISO 11296-7:2019(E)

ISO 7619-1, Rubber, vulcanized or thermoplastic — Determination of indentation hardness — Part 1:
Durometer method (Shore hardness)
ISO 9967, Thermoplastics pipes — Determination of creep ratio
ISO 9969, Thermoplastics pipes — Determination of ring stiffness
ISO 10467:2018, Plastics piping systems for pressure and non-pressure drainage and sewerage — Glass-
reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin
ISO 11296-1:2018, Plastics piping systems for renovation of underground non-pressure drainage and
sewerage networks — Part 1: General
ISO 11296-4:2018, Plastics piping systems for renovation of underground non-pressure drainage and
sewerage networks — Part 4: Lining with cured-in-place pipes
ISO 13262, Thermoplastics piping systems for non-pressure underground drainage and sewerage —
Thermoplastics spirally-formed structured-wall pipes — Determination of the tensile strength of a seam
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 11296-1 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
3.1
spirally-wound pipe
pipe formed by continuously winding and joining a profiled plastics strip, or a profiled plastics strip
and integral locking joiner strip
3.2
seam
joint between adjacent profiled plastics strips formed by an integral locking mechanism and/or
seam sealant
3.3
integral locking mechanism
mechanical interlock achieved by suitable design of the edges of the extruded profile
3.4
seam sealant
thermoplastic or adhesive material added to the integral locking mechanism or profiled plastics strip
surface to make the seam leaktight
3.5
close fit
situation of the outside of the installed liner relative to the inside of the existing pipeline, which can
either be an interference fit or include a small annular gap resulting from shrinkage and tolerances only
Note 1 to entry: Tolerances in the above definition refer to offsets and deformities in the existing pipeline.
Spirally-wound liners are not subject to shrinkage.
3.6
close-fit spirally-wound pipe
continuous lining pipe wound from a profiled plastics strip, with or without steel reinforcement,
expanded or wound in place to achieve a close fit to the existing pipeline
2 © ISO 2019 – All rights reserved

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SIST EN ISO 11296-7:2019
ISO 11296-7:2019(E)

4 Symbols and abbreviated terms
For the purposes of this document, the symbols and abbreviated terms given in ISO 11296-1 and the
following apply.
4.1 Symbols
A unit cross-sectional area of the profiled plastics strip
w
d outside diameter
e
e height of neutral axis of the profile plastics strip above its base
a
e overall profile height
o
e minimum waterway wall thickness
w,min
e waterway wall thickness at any point
w
e encapsulation thickness at any point
1
e encapsulation thickness at any point
2
I second moment of area of the profiled plastics strip
w
l length of the sample for short-term tensile force resistance test of the locked seam
s
S ring stiffness of the pipe
w effective width of the profiled plastics strip
w width of the sample for short-term tensile force resistance test of the locked seam
s
4.2 Abbreviated terms
EPDM ethylene-propylene-diene monomer
GRP glass-reinforced thermosetting plastic
HDPE high density polyethylene
PE polyethylene
PVC-U unplasticized poly(vinyl chloride)
SWO spirally-wound
5 Pipes at the “M” stage
NOTE This clause specifies requirements for profiled plastics strips, and the material classification of any
steel stiffening elements incorporated, prior to winding into a pipe. For requirements for the wound pipe, see
Clause 8.
5.1 Materials
The material of the profiled plastics strip shall be unplasticized poly(vinyl chloride) (PVC-U) or high
density polyethylene (HDPE), to which are added those additives needed to facilitate the manufacture
and/or installation of pipes conforming to this document.
© ISO 2019 – All rights reserved 3

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SIST EN ISO 11296-7:2019
ISO 11296-7:2019(E)

Depending on the design of the profiled plastics strip, the seam sealant shall comprise one or more of
the following materials:
— thermoplastics (e.g. HDPE);
— thermoplastic elastomers (e.g. EPDM, silicone);
— adhesives (e.g. amorphous poly-alpha-olefin).
Only virgin and own reprocessable materials, as defined in ISO 11296-1, are permitted for the profiled
plastics strips and seam sealant. The material(s) used for the seam sealant shall be declared by the
manufacturer of the profiled plastics strips.
Any steel stiffening elements, including material grade classified in accordance with ISO 4948-2 or
other equivalent international or national standard, shall be declared by the supplier. The material of
any stiffening element, whether or not encapsulated, shall in all cases be approved by the client for the
environment of its specific application.
NOTE 1 Detailed specification of non-plastics materials is outside the scope of this document.
NOTE 2 Some sewage effluents and groundwater contaminants potentially corrosive to steel can penetrate
a thin protective layer of PVC-U or HDPE. Depending on the profile design and installation technique, such
protective layers can also be exposed to risk of damage.
5.2 General characteristics
When viewed without magnification, the surfaces of the profiled plastics strips shall be smooth, clean
and free from scoring, cavities an
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