ISO/FDIS 11300-3

ISO/TC 138/SC 8
Secretariat: JISC
ISO/TC 138/SC 8/WG 2
Secretariat: DIN
Date: 2025-08-0310-21
Piping systems for rehabilitation of underground drains, sewers and
water supply networks — —
Part 3:
Unplasticized poly (vinyl chloride) (PVC-U) material
Systèmes de canalisations pour la réhabilitation des réseaux enterrés de branchements et de, des collecteurs
d'assainissementd’assainissement et des réseaux d’alimentation en eau — Partie 3: Matériau Poly
(chlorure de vinyle) non-plastifié (PVC-U)enterrés —

Partie 3: Matériau poly(chlorure de vinyle) non plastifié (PVC-U)
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FDIS stage
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A model document of an International Standard (the Model International Standard) is available at:
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ISO/FDIS 11300-3:2025(en)
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Contents
Foreword . vii
Introduction . viii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms . 6
5 Pipes . 6
6 Fittings . 8
7 Ancillary components . 8
8 Fitness for purpose . 8
9 Installation practice . 10
Annex A (normative) Additional requirements applicable for lining with Close-fit pipes . 14
Annex B (informative) Summary of required elements to be included in installation manuals . 20
Bibliography . 21

Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
3.1 General . 2
3.2 Terms related to techniques . 2
3.3 Terms related to characteristics . 3
3.4 Terms related to product stages . 4
3.5 Terms related to materials . 5
4 Symbols and abbreviated terms . 5
4.1 Symbols . 5
4.2 Abbreviated terms . 5
5 Pipes . 6
5.1 Materials . 6
5.1.1 General . 6
5.1.2 Virgin material . 6
5.1.3 Reprocessable material and recyclable material . 6
5.2 General characteristics . 6
5.3 Material characteristics . 6
5.4 Geometric characteristics . 6
5.5 Mechanical characteristics . 6
5.6 Physical characteristics . 7
5.7 Jointing . 7
5.8 Marking . 7
6 Fittings . 7
6.1 General . 7
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ISO/FDIS 11300-3:2025(en)
6.2 Marking . 7
6.3 Regional requirements for fittings . 7
7 Ancillary components . 8
8 Fitness for purpose . 8
8.1 Materials . 8
8.2 General characteristics . 8
8.3 Geometric characteristics . 8
8.4 Mechanical characteristics . 8
8.5 Sampling . 9
9 Installation practice . 9
9.1 Preparatory work . 9
9.2 Storage, handling and transport of pipes and fittings . 9
9.3 Equipment . 9
9.3.1 General . 9
9.3.2 Pipe skids/rollers and pipe entry guides . 9
9.3.3 Winching and rod-pulling equipment . 9
9.3.4 Inspection equipment . 10
9.3.5 Lifting equipment . 10
9.4 Installation . 10
9.4.1 General . 10
9.4.2 Safety precautions . 11
9.4.3 Simulated installations . 11
9.5 Process-related inspection and testing . 11
9.6 Pipe end termination . 11
9.7 Reconnection to the existing pipeline system . 11
9.8 Final inspection and testing . 11
9.9 Documentation . 12
Annex A (normative) Additional requirements applicable for lining with Close-fit pipes . 13
A.1 General . 13
A.2 Pipes . 13
A.2.1 Materials . 13
A.2.2 General characteristics . 13
A.2.3 Material characteristics . 13
A.2.4 Geometric characteristics . 14
A.2.5 Mechanical characteristics . 14
A.2.6 Physical characteristics . 15
A.2.7 Jointing . 16
A.2.8 Marking . 16
A.3 Installation practice . 16
A.3.1 Preparatory work . 16
A.3.2 Storage, handling and transport of pipes and fittings . 16
A.3.3 Equipment . 17
A.3.4 Installation . 17
A.3.5 Process-related inspection and testing . 17
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Annex B (informative) Summary of required elements to be included in installation manuals . 18
Bibliography . 19

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ISO/FDIS 11300-3:2025(en)
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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights
in respect thereof. As of the date of publication of this document, ISO had not received notice of (a) patent(s)
which may be required to implement this document. However, implementers are cautioned that this may not
represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents.www.iso.org/patents. ISO shall not be held responsible for identifying any or all such
patent rights.
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 8, Rehabilitation of pipeline systems, 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 first edition of ISO 11300-3:2025, along with ISO 11300-1:2025, ISO 11300-2:2025 and ISO/DIS 11300-
4 (in preparation), cancels and replaces ISO 11296-1:2018 and ISO 11296-3:2018, which have been
technically revised.
The main changes are as follows:
— — for piping systems made from unplasticized poly (vinyl chloride) (PVC-U) material, this document
replaces the related content, including requirements, of the documents listed above.
A list of all parts in the ISO 11300 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.
© ISO 2025 – All rights reserved
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Introduction
This document is a part of a series of International Standards concerning piping systems of various materials
used for the rehabilitation of existing pipelines in a specified application area:
— — ISO 11300 series: Piping systems for rehabilitation of underground drains, sewers and water supply
networks;
— — ISO 11301 series: Piping systems for rehabilitation of underground gas supply networks.
The ISO 11300 series and the ISO 11301 series are subdivided into parts covering a specific material per pipe
system.
The ISO 11300 series is subdivided in four parts:
— — Part 1: Polyethylene (PE) material (this document);;
— — Part 2: Thermoset composite materials;
— — Part 3: PVC-U material; (this document);
— — Part 4: Thermoplastic composite materials.
These documents cover various techniques for renovation and trenchless replacement. Furthermore, they 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 piping system components “as manufactured”.
A consistent structure of clause headings has been adopted for all parts of the ISO 11300 series and ISO 11301
series, in order to facilitate direct comparisons across renovation technique families.
Figure 10 shows the clause structure and the relationship between the ISO 11300 series and the ISO 11301
series.
For complementary information, see ISO 11295.
[1] [
For assessment of conformity to the requirements of this document, see ISO/TS 23818-3 . Error! Reference
]
source not found. .
viii © ISO #### 2025 – All rights reserved
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ISO/FDIS 11300-3:2025(en)
a
In preparation.
a
In preparation.
Figure 1 — Clause structure of the ISO 11300 series and the ISO 11301 series
The various techniques for rehabilitation of underground drains, sewers and water supply networks, within
the scope of pipeline rehabilitation techniques generally, are shown schematically in Figure 2.0. For
definitions of standardized renovation techniques shown in Figure 2,0, but outside the scope of this document,
see ISO 11295.
© ISO 2025 – All rights reserved
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a
This document is applicable, for pipe systems made from PVC-U materials.
x © ISO #### 2025 – All rights reserved
x
ISO/FDIS 11300-3:2025(en)
a
This document is applicable, for pipe systems made from PVC-U materials.
Figure 2 — Technique families for rehabilitation of underground drains, sewers and water supply
networks using plastics pipes, within the scope of pipeline rehabilitation techniques

© ISO 2025 – All rights reserved
xi
Piping systems for rehabilitation of underground drains, sewers and
water supply networks — —
Part 3:
Unplasticized poly (vinyl chloride) (PVC-U) material
1 Scope
This document specifies requirements and test methods for pipes and fittings which are part of piping systems
for the rehabilitation of non-pressure underground drains and sewers.
NOTE It is not applicable to use of PVC-U material for rehabilitation of pipes under pressure.
It is applicable to unplasticized poly (vinyl chloride) (PVC-U) pipes, fittings and assemblies, as manufactured
and as installed with service temperature not exceeding 35 °C. It is not applicable to the existing pipeline.
ItThis document is applicable to the renovation technique family “lining with close-fit pipes”.
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 527--2, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and extrusion
plastics
ISO 2505, Thermoplastics pipes — Longitudinal reversion — Test method and parameters
ISO 2507--1, Thermoplastics pipes and fittings — Vicat softening temperature — Part 1: General test method
ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions
ISO 3127, Thermoplastics pipes — Determination of resistance to external blows — Round-the-clock method
ISO 4435, Plastics piping systems for non-pressure underground drainage and sewerage — Unplasticized
poly(vinyl chloride) (PVC-U)
ISO 6259--1, Thermoplastics pipes — Determination of tensile properties — Part 1: General test method
ISO 9852, Unplasticized poly(vinyl chloride) (PVC-U) pipes — Dichloromethane resistance at specified
temperature (DCMT) — Test method
ISO 9967, Thermoplastics pipes — Determination of creep ratio
ISO 9969, Thermoplastics pipes — Determination of ring stiffness
ISO 11295, Plastics piping systems used for the rehabilitation of pipelines — Classification and overview of
strategic, tactical and operational activities
ISO 11300-1:2025, Piping systems for rehabilitation of underground drains, sewers and water supply
networks — Part 1: Polyethylene (PE) material
© ISO 2025 – All rights reserved
ISO 18373--1, Rigid PVC pipes — Differential scanning calorimetry (DSC) method — Part 1: Measurement of the
processing temperature
EN 1401--1, Plastics piping systems for non-pressure underground drainage and sewerage — Unplasticized
poly(vinyl chloride) (PVC-U) – Part 1: Specifications for pipes, fittings and the system
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 11295 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1 General
3.1.1 3.1.1
characteristic
property, dimension or other feature of a material or component
[SOURCE: ISO 11300-1:2025, 3.1.1]
3.1.2 3.1.2
declared value
limiting value of a characteristic (3.1.1)(Error! Reference source not found.) declared in advance by the
rehabilitation system supplier (3.1.3),(Error! Reference source not found.), which becomes the requirement
for the purposes of assessment of conformity
[SOURCE: ISO 11300-1:2025, 3.1.2]
3.1.3 3.1.3
rehabilitation system supplier
entity that specifies the field and range of application and brings together the components of a rehabilitation
system to meet the requirements of the product standard at the “M” stage (3.4.1),(Error! Reference source
not found.), so that when installed in accordance with the installation manual they meet the requirements of
the product standard at the “I” stage (3.4.2)(Error! Reference source not found.)
[SOURCE: ISO 11300-1:2025, 3.1.5]
3.1.4 3.1.4
system installer
entity that prepares the host pipe, takes the rehabilitation system at the “M” stage (3.4.1)(Error! Reference
source not found.) and installs it so that it is at the “I” stage (3.4.2)(Error! Reference source not found.)
[SOURCE: ISO 11300-1:2025, 3.1.6]
3.2 Terms related to techniques
3.2.1 3.2.1
close fit
situation of the outside of the installed liner relative to the inside of the existing pipeline, which may either be
an interference fit or include a small annular gap resulting from shrinkage and tolerances only
[SOURCE: ISO 11295:2025, 3.2.1]
2 © ISO #### 2025 – All rights reserved
3.2.2 3.2.2
close-fit pipe
continuous lining pipe of thermoplastic material reshaped or otherwise expanded after insertion to achieve a
close fit (3.2.1)(Error! Reference source not found.) to the existing pipeline
[SOURCE: ISO 11295:2025, 3.2.2]
3.2.3 3.2.3
integral joint
joint at the pipe end, either by means of a socket at one pipe end (single-socket pipe) or matching joint parts
integrated in the pipe wall at either end of the pipe (rubber ring joints or screwed joints).
[SOURCE: ISO 11300-1:2025, 3.7.5]
3.3 Terms related to characteristics
3.3.1 3.3.1
nominal size
DN
numerical designation of the size of a component related to the inside or outside diameter
Note 1 to entry: It is a convenient round number approximately equal to the manufacturing dimension in millimetres
(mm). It is not applicable to components designated by thread size.
[SOURCE: ISO 11300-1:2025, 3.3.1]
3.3.2 3.3.2
nominal size
DN/OD
nominal size, related to the outside diameter
[SOURCE: ISO 11300-1:2025, 3.3.2]
3.3.3 3.3.3
nominal outside diameter
d
n
specified outside diameter, in millimetres, assigned to a nominal size DN/OD (3.3.2)(Error! Reference source
not found.)
Note 1 to entry: For thermoplastics solid-wall components, the value of nominal outside diameter is identical to the
minimum mean outside diameter, d , defined in 3.3.5.Error! Reference source not found.
em,min
[SOURCE: ISO 11300-1:2025, 3.3.3]
3.3.4 3.3.4
mean outside diameter
d
em
value of the measurement of the outer circumference of the pipe or spigot end of a fitting in any cross-section
divided by π (= 3,142) and rounded to the next greater 0,1 mm
[SOURCE: ISO 11300-1:2025, 3.3.4]
© ISO 2025 – All rights reserved
3.3.5 3.3.5
minimum mean outside diameter
d
em,min
minimum value of the mean outside diameter (3.3.4)(Error! Reference source not found.) as specified for a
given nominal size
[SOURCE: ISO 11300-1:2025, 3.3.5]
3.3.6 3.3.6
wall thickness
e
value of the measurement of the wall thickness at any point around the circumference of a component
[SOURCE: ISO 11300-1:2025, 3.3.6]
3.3.7 3.3.7
mean wall thickness
e
m
arithmetic mean of a number of measurements of the wall thickness (3.3.6),(Error! Reference source not
found.), regularly spaced around the circumference and in the same cross-section of a component, including
the measure minimum and the maximum measured values of the wall thickness in that cross-section
[SOURCE: ISO 11300-1:2025, 3.3.7]
3.3.8 3.3.8
minimum wall thickness at any point
e
min
minimum value of the wall thickness (3.3.6)(Error! Reference source not found.) at any point around the
circumference of a component, as specified
[SOURCE: ISO 11300-1:2025, 3.3.8]
3.3.9 3.3.9
nominal wall thickness
e
n
numerical designation of the wall thickness (3.3.6)(Error! Reference source not found.) of a component,
which is a convenient round number, approximately equal to the manufacturing dimension in millimetres
(mm)
Note 1 to entry: For thermoplastics components conforming to ISO 4435 or the different parts of the ISO 4427 series,
the value of nominal wall thickness, en, is identical to the specified minimum wall thickness at any point (3.3.8),(Error!
Reference source not found.), e .
min
[SOURCE: ISO 11300-1:2025, 3.3.9]
3.3.10 3.3.10
standard dimension ratio
SDR
numerical designation of a pipe series, which is a convenient round number, approximately equal to the
dimension ratio of the nominal outside diameter (3.3.3),(Error! Reference source not found.), d , and the
n
nominal wall thickness (3.3.9),(Error! Reference source not found.), e
n
[SOURCE: ISO 11300-1:2025, 3.3.11]
4 © ISO #### 2025 – All rights reserved
3.3.11 3.3.11
ring stiffness
resistance of a pipe to diametric deflection in response to external loading applied along one longitudinal
diametric plane
Note 1 to entry: This definition applies to both long and short-term values.
[SOURCE: ISO 11300-1:2025, 3.3.12]
3.4 Terms related to product stages
3.4.1 3.4.1
“M” stage
stage as manufactured, before any subsequent site processing of components associated with the particular
renovation technique
Note 1 to entry: For pipes and fittings at the “M” stage, see Clauses 55 and 6,6, respectively.
[SOURCE: ISO 11300-1:2025, 3.4.1]
3.4.2 3.4.2
“I” stage
stage as installed, i.e. in final configuration after any site processing of components associated with the
particular renovation technique
Note 1 to entry: For pipes and fittings at the “I” stage, see Clause 8.8.
[SOURCE: ISO 11300-1:2025, 3.4.2]
3.5 Terms related to materials
3.5.1 3.5.1
virgin material
material in a form such as granules, powder or liquid, which has not been subjected to use or processing other
than that required for its manufacture and to which no reprocessable or recyclable material (3.5.4)(Error!
Reference source not found.) has been added
[SOURCE: ISO 11300-1:2025, 3.5.1]
3.5.2 3.5.2
own reprocessable material
material prepared from clean, rejected and unused pipes, fittings, or valves, including trimmings from the
production of pipes, fittings or valves, that is reprocessed in a manufacturer’s plant after having previously
been processed by the same manufacture in the production of a component by, for example, injection
moulding or extrusion
[SOURCE: ISO 11300-1:2025, 3.5.2]
3.5.3 3.5.3
external reprocessable material
material from unused products or trimmings w
...