CEN/TS 13476-4:2025

SLOVENSKI STANDARD
01-december-2025
Cevni sistemi iz polimernih materialov za odpadno vodo in kanalizacijo, ki delujejo
po težnostnem principu in so položeni v zemljo - Cevni sistemi s strukturirano
steno iz nemehčanega polivinilklorida (PVC-U), polipropilena (PP) in polietilena
(PE) - 4. del: Ugotavljanje skladnosti
Plastics piping systems for non-pressure underground drains and sewers - Structured-
wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP)
and polyethylene (PE) - Part 4: Assessment of conformity
Kunststoff-Rohrleitungssysteme für erdverlegte drucklose Abwasserkanäle und -
leitungen - Rohrleitungssysteme mit profilierter Wandung aus weichmacherfreiem
Polyvinylchlorid (PVC-U), Polypropylen (PP) und Polyethylen (PE) - Teil 4: Beurteilung
der Konformität
Systèmes de canalisations en plastique pour les branchements et les collecteurs
d'assainissement sans pression enterrés - Systèmes de canalisations à parois
structurées en poly(chlorure de vinyle) non plastifié (PVC-U), polypropylène (PP) et
polyéthylène (PE) - Partie 4 : Évaluation de la conformité
Ta slovenski standard je istoveten z: CEN/TS 13476-4:2025
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TS 13476-4
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
October 2025
TECHNISCHE SPEZIFIKATION
ICS 23.040.20; 93.030 Supersedes CEN/TS 13476-4:2019
English Version
Plastics piping systems for non-pressure underground
drains and sewers - Structured-wall piping systems of
unplasticized poly(vinyl chloride) (PVC-U), polypropylene
(PP) and polyethylene (PE) - Part 4: Assessment of
conformity
Systèmes de canalisations en plastique pour les Kunststoff-Rohrleitungssysteme für erdverlegte
branchements et les collecteurs d'assainissement sans drucklose Abwasserkanäle und -leitungen -
pression enterrés - Systèmes de canalisations à parois Rohrleitungssysteme mit profilierter Wandung aus
structurées en poly(chlorure de vinyle) non plastifié weichmacherfreiem Polyvinylchlorid (PVC-U),
(PVC-U), polypropylène (PP) et polyéthylène (PE) - Polypropylen (PP) und Polyethylen (PE) - Teil 4:
Partie 4 : Évaluation de la conformité Beurteilung der Konformität
This Technical Specification (CEN/TS) was approved by CEN on 11 August 2025 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 13476-4:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Abbreviated terms . 9
5 General. 9
6 Testing . 9
6.1 Grouping. 9
6.1.1 General. 9
6.1.2 Size groups . 9
6.1.3 Fitting groups . 9
6.2 Type testing . 10
6.2.1 Type testing . 10
6.2.2 Material specification PVC-U . 15
6.2.3 Material specification PP . 16
6.2.4 Material specification PE . 18
6.2.5 Recyclate – validation . 19
6.3 Batch release testing . 19
6.4 Process verification testing . 23
6.5 Audit testing . 24
6.6 Test records . 27
Annex A (informative) Test matrix . 28
Bibliography . 30

European foreword
This document (CEN/TS 13476-4:2025) has been prepared by 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/TS 13476-4:2019.
This document includes the following significant technical changes with respect to
CEN/TS 13476-4:2019:
a) updating of the ”terms” and “definitions” in line with EN 14541-1;
b) “drainage and sewerage” changed into “drains and sewers” through the document.;
c) updated in line with material clauses and annexes prEN series;
d) updated in line with detected and solved mistakes in prEN series;
e) Table A.1 updated;
f) editorial updates through the document.
EN 13476 consists of the following parts, under the general title ” Plastics piping systems for non-pressure
underground drains and sewers — Structured-wall piping systems of unplasticized poly(vinyl chloride)
(PVC-U), polypropylene (PP) and polyethylene (PE)”:
— Part 1: General requirements and performance characteristics;
— Part 2: Specifications for pipes and fittings with smooth internal and external surface and the system,
Type A;
— Part 3: Specifications for pipes and fittings with smooth internal and profiled external surface and
the system, Type B;
— Part 4: Guidance for the assessment of conformity (this document).
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Introduction
This document details the applicable characteristics to be assessed for type testing (TT), batch release
test (BRT), process verification test (PVT), and audit test (AT), as well as the frequency and sampling for
testing.
The concept of testing and organization of those tests used for the AoC is shown, without or with
certification, in Figures 1 and 2.

Figure 1 — Typical scheme for the AoC by a manufacturer, without certification

Figure 2 — Typical scheme for the AoC by a manufacturer, including certification
1 Scope
This document gives guidance and requirements for the assessment of conformity of materials, products,
joints and assemblies in accordance with the applicable part(s) of EN 13476 intended to be included in
the manufacturer’s quality plan as part of the quality management system and for the establishment of
certification procedures.
NOTE 1 A test matrix provides an overview of the testing scheme in Annex A, Table A.1.
[1]
NOTE 2 If certification is involved, the certification body operating in accordance with EN ISO/IEC 17065 and
[2]
EN ISO/IEC 17020 is considered to be competent.
In conjunction with EN 13476-1:2025, EN 13476-2:2025 and EN 13476-3:2025 this document is
applicable to Plastics piping systems for non-pressure underground drains and sewers — Structural-wall
piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE).
The application area code used in the marking of pipes and fittings indicates for which application area(s)
the products are intended:
U: for the area more than 1 m from the building to which the buried piping system is connected, and
UD: for application area U and the area under and within 1 m from the building where the pipes and the
fittings are buried in ground and are connected to the soil and waste discharge system of the building.
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.
EN 13476-1:2025, Plastics piping systems for non-pressure underground drains and sewers — Structured-
wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE)
— Part 1: General requirements and performance characteristics
EN 13476-2:2025, Plastics piping systems for non-pressure underground drains and sewers — Structured-
wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE)
— Part 2: Specifications for pipes and fittings with smooth internal and external surface and the system,
Type A
EN 13476-3:2025, Plastics piping systems for non-pressure underground drains and sewers — Structured-
wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE)
— Part 3: Specifications for pipes and fittings with smooth internal and profiled external surface and the
system, Type B
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 13476-1:2025,
EN 13476-2:2025 and EN 13476-3:2025 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
certification body
third-party conformity assessment body operating certification schemes
Note 1 to entry: A certification body can be non-governmental or governmental (with or without regulatory
authority).
[1]
[SOURCE: EN ISO/IEC 17065:2012 , definition 3.12]
3.2
laboratory
body that performs one or more of the following activities:
— testing;
— calibration;
— sampling, associated with subsequent testing or calibration
Note 1 to entry: In the context of this document, the materials and products can be subjected to type testing, batch
release testing, process verification testing and audit testing, as applicable.
[3]
[SOURCE: EN ISO/IEC 17025:2017 , definition 3.6, modified — Note 1 to entry is changed here]
3.3
quality management system
part of a management system with regard to quality
[4]
Note 1 to entry: Requirements for quality management systems are given in EN ISO 9001 .
[5]
[SOURCE: EN ISO 9000:2015 , definition 3.5.4, modified — Note 1 to entry is added here]
3.4
quality plan
document setting out the specific quality practices, responsibilities, resources and sequence of activities
relevant to a particular product or range of products
3.5
type test
TT
test performed to prove that the material, component, product, joint or assembly is capable of conforming
to the requirement(s) given in the relevant standard or if applicable to determine the manufacturer’s
declared values
3.6
batch release test
BRT
test performed on a batch of material, components, products, joints or assemblies which has to be
satisfactorily completed before the batch can be released
Note 1 to entry: A batch release test can be performed by the manufacturer or outsourced on behalf of the
manufacturer.
3.7
process verification test
PVT
test performed on material, component, product, joint or assembly by or on behalf of the manufacturer
on compound or products or joints or assemblies at specific intervals to confirm that type tests originally
performed continue to be valid
Note 1 to entry: Process verification tests can be performed by the manufacturer or outsourced on behalf of the
manufacturer.
3.8
audit test
AT
test performed on behalf of a certification body
Note 1 to entry: Audit tests are generally required to confirm that the material, formulation, compound, 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
3.9
indirect test
batch release test performed which differs from that specified test for that particular characteristic,
having previously verified its correlation with the specified test
Note 1 to entry: Indirect tests can be performed by the manufacturer or outsourced on behalf of the manufacturer.
3.10
witness test
type test or audit test which is performed in the presence of a representative of the certification body
3.11
material
generic term for compounds and formulations grouped by families, expressed by generic names
Note 1 to entry: Examples of generic names are PVC-U, polypropylene.
3.12
Compound or formulation
homogenous mixture of substances used for the manufacture of the product as defined in the referring
product standard
Note 1 to entry: In general, the term “compound” is used for polyolefins and the term “formulation” for PVC.
Note 2 to entry: The term “composition” is often used instead of [compound] [formulation] for metals and when
dealing with water and food contact regulations.
3.13
material batch
quantity of a given homogeneous compound / formulation manufactured under uniform conditions
defined and identified by the compound / formulation manufacturer
3.14
product
item as defined in the scope of the standard, e.g. pipe, fitting, valve, manhole, inspection chamber
3.15
product batch
clearly identified collection of products, manufactured consecutively or continuously under the same
conditions, using the same compound / formulation conforming to the same specification
3.16
sample
one or more components or products drawn from the same production batch, selected at random without
regard to their quality
3.17
sampling group
defined collection of similar components or products from which samples are selected for testing
purposes
3.18
component
item manufactured or supplied as part of a product or as a spare part for that product
Note 1 to entry: Depending on the context, components can be considered as products and be individually
approved (e.g. o-ring, gasket) or they are tested as integral part of a finished product (e.g. in a valve).
3.19
joint
connection between two products
3.20
assembled product
product comprising two or more components
3.21
fabricated fitting
fitting produced by welding, thermoforming or adhesive joint from pipes and/or from injection-moulded
or rotomoulded fittings
3.22
assembly
set of components that forms a product or a test piece
3.23
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.
3.24
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
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
AoC assessment of conformity évaluation de la conformité Beurteilung der Konformität
AT audit test essai d’audit Überwachungsprüfung
BRT batch release test essai de libération de campagne Freigabeprüfung einer Charge
de fabrication
PVT process verification test essai de vérification du procédé Prozessüberprüfung
de fabrication
TT type test essai de type Typprüfung
5 General
Materials, products and fitness for purpose shall conform to the requirements given in EN 13476-1:2025,
EN 13476-2:2025 and EN 13476-3:2025.
Materials and products shall be produced by the manufacturer under a quality management system
which includes a quality plan.
6 Testing
6.1 Grouping
6.1.1 General
For the purposes of this document, the groups specified in 6.1.2 and 6.1.3 apply.
6.1.2 Size groups
Four size groups are defined for pipes and fittings, as given in Table 1.
For testing purposes, one individual nominal diameter, dn, shall be selected from each group.
Table 1 — Definition of size groups
Size group number DN/OD or DN/ID
1 ≤ 200
2 > 200 and ≤ 500
3 > 500 and ≤ 1 200
4 > 1 200 and ≤ 3 000
6.1.3 Fitting groups
Three groups of fittings each having a similar design are defined, as given in Table 2.
For testing purposes, one individual fitting shall be selected from each group.
Table 2 — Definition of fitting groups
Fitting group Type of fitting
1 Bends
2 Branches
3 Other fittings
6.2 Type testing
6.2.1 Type testing
Type testing shall be performed as described in Table 3, Table 4 and Table 5 whenever there is:
a) a new system or product (N);
b) a change in design (D);
c) a change of compound or formulation (M);
d) a change in production processing method (P), other than routine in-process adjustments;
e) an extension of the product range (E), except the products already covered by the scheme of sampling
procedure.
When a change of production site occurs, the manufacturer shall determine which type tests need to be
revalidated.
Unless any of the conditions a) to e) above occurs, the type test results remain valid.
A type test may be performed by the manufacturer or outsourced on behalf of the manufacturer.
A type test can be performed as a witness test if accepted by the certification body.
Table 3 — Characteristics of pipes that require type testing
Characteristic Reference to clause or subclause of Conditions Sampling procedure
a
requiring test
EN 13476-2:2025 EN 13476-3:2025
c
Manufacturer
N D E Certification
M
b
body
PVC content 5.2.1, 5.2.1, + − + − once per once per
formulation formulation
Annex A Annex A
PP content 5.3.1, 5.3.1, + − + − once per compound once per compound
Annex C Annex C
PE content 5.4.1, 5.4.1, + − + − once per compound once per compound
Annex E Annex E
Recyclate Annex B or D or F Annex B or D or F + - + − once per compound once per compound
content / formulation / formulation
Characteristic Reference to clause or subclause of Conditions Sampling procedure
a
requiring test
EN 13476-2:2025 EN 13476-3:2025
c
N D  E Manufacturer Certification
M
b
body
Recyclate Annex B Annex B + - + − once per compound once per compound
/ /
characteristics or D or F or D or F     formulation formulation
according to
agreed
specification
Melt mass- 5.3,2 once per compound
5.3, 5.4 + − + − once per compound
flow rate
5.4.2 Table 2 or 3
(MFR- value)
Table 2 or 3
Resistance to 5.2,2 5.2,2 + − + − once per once per
internal  5.3.2, 5.3.2,     compound/formulat compound/formula
ion tion
d
pressure 5.4.2 5.4.2
Table 1, Table 1,
2 or 3 2 or 3
Thermal 5.3.2, 5.3.2, + − + − once per compound once per compound
e
stability (OIT)
5.4.2 5.4.2
Table 2 or 3 Table 2 or 3
Reference 5.4.2 5.4.2 + − + − once per compound once per compound
density / formulation / formulation
Table 3 Table 3
Appearance 7 7 + + + + once per size once per size group
Colour 7 7 + − + + once per size once per size group
Geometrical 8 8 + + − + once per size / once per size group
characteristics stiffness class / stiffness class
Vicat softening 9.1.1 9.1.1 + − + − once per once per
temperature formulation formulation
Table 8 Table 8
Degree of 9.1.1 9.1.1 + − − + once per size / once per size group
gelation formulation
Table 8 Table 8
- − + − once per once per
formulation formulation
Longitudinal 9.1.1, Not + − − + once per size once per size group
9.2.1,
applicable
reversion Type
9.3.1
A1
Table 8,
10 or 12
Resistance to Not applicable 9.1.1, + + + + once per size once per size group
heating - oven
9.2.1,
test, Type B
9.3.1
pipes
Table 8, 10 or 12
Characteristic Reference to clause or subclause of Conditions Sampling procedure
a
requiring test
EN 13476-2:2025 EN 13476-3:2025
c
N D  E Manufacturer Certification
M
b
body
Impact strength 10.1.1 10.1.1 + - - - once per compound once per compound
(round the / formulation / formulation
Table 14 or Table 14 or
clock method)
Annex G, as Annex G, as
applicable applicable
once per compound once per compound
/ formulation / formulation
- - + -
Impact strength Annex H if Annex H if + - - + once per size / once per size
(staircase applicable applicable compound / group/
f
method) formulation
- - + - once per compound once per compound
/ formulation / formulation
Ring stiffness 10.1.1 10.1.1 + + + + once per size / once per size group
stiffness class/ / stiffness class /
Table 14 Table 14
compound / compound/
formulation formulation
Ring flexibility 10.1.1 10.1.1 + + + + once per size / once per size group
stiffness class / / stiffness class /
Table 14 or Annex I Table 14 or Annex I
compound / compound
as applicable as applicable
formulation /formulation
g
Creep ratio 10.1.1 10.1.1 + + + + once per design once per design
family family
Table 14 Table 14
/compound/formul
ation
Tensile strength 10.1.1 10.1.1 + + + + once per once per size group
of seam size / / compound /
Table 14 Table 14
compound / formulation
formulation
a
+: test to be carried out.
b
Recommended sampling procedure for a laboratory working for a certification body.
c
A change of the supplier does not necessarily constitute a change in compound or formulation if technical characteristics of
the material are similar.
d
To be tested on solid wall pipe; diameter and wall thickness as defined by the manufacturer.
e
Only applicable for components for fused joints.
f
Only for pipes intended also to be installed at temperature below −10 °C. If this test is required, then the round-the-clock
method is not necessary.
g
By design family is understood designs with the same ratio (within the same wall construction) between the neutral
diameter of the pipe wall and the max. distance to the outer or inner profile. Not applicable for size group 4.
Table 4 — Characteristics of fittings that require type testing
Characteristic Reference to clause or subclause or tables Conditions Sampling procedure
a
of requiring test
c
EN 13476-2:2025 EN 13476-3:2025 N D M P E Manufacturer Certification body
b
PVC content 5.2.1, Annex A 5.2.1, Annex A + − + − − once per once per
formulation formulation
PP content 5.3.1, Annex C 5.3.1, Annex C + − + − − once per once per
compound compound
PE content 5.4.1, Annex E 5.4.1, Annex E + − + − − once per once per
compound compound
Recyclate Annex B or D or F Annex B or D or F + - + - - once per once per
content compound / compound /
formulation formulation
Recyclate Annex B or D or F Annex B or D or F + - + - - once per once per
characteristics compound / compound /
according to formulation formulation
agreed
specification
Melt mass-flow 5.3.2, 5.4.2, 5.4.3 5.3.2, 5.4.2, 5.4.3 + − + − − once per once per
rate compound compound
Table 2, 3 or 4 Table 2, 3 or 4
d
(MFR-value)
Resistance to 5.2.2, 5.3.2, 5.4.2, 5.4.3 5.2.2, 5.3.2, 5.4.2, + − + − − once per once per
internal 5.4.3 compound / compound /
Table 1, 2, 3 or 4
d e
pressure  formulation formulation
Table 1, 2, 3 or 44
Thermal 5.3.2, 5.4.2, 5.4.3 5.3.2, 5.4.2, 5.4.3 + − + − − once per once per
stability compound compound
Table 2, 3 or 4 Table 2, 3 or 4
d
(OIT)
Reference 5.4.2, 5.4.3 5.4.2, 5.4.3 + − + − − once per once per
density compound / compound /
Table 3 or 4 Table 3 or 4
formulation formulation
Appearance 7 7 + + + - + once per each once per fitting
fitting group
Colour 7 7 + − + - + once per each once per fitting
fitting group
Geometrical 8.2 8.2 + + − + + once per each once per size
characteristics fitting group and per
Tables 5, 6, and 7 Tables 5, 6, and 7
fitting group
Vicat softening 9.1.2 9.1.2 + − + − − once per once per
d
temperature formulation formulation
Table 9 Table 9
Effect of 9.1.2, 9.2.2, 9.3.2 9.1.2, 9.2.2, 9.3.2 + + - + + once per each once per fitting
heating fitting group
Table 9, 11, 13 as Table 9, 11, 13 as
applicable applicable
- - + - - once per size group once per
/ fitting group compound /
formulation
Characteristic Reference to clause or subclause or tables Conditions Sampling procedure
a
of requiring test
c
EN 13476-2:2025 EN 13476-3:2025 N D M P E Manufacturer Certification body
b
Stiffness 10.2 10.2 + + + − + once per size once per fitting
group/fitting group 1 and 2;
Table 16 Table 16
group 1 and 2 largest degree
largest degree of of bend for the
bend for the size, size, 45°
45° branch branch
g
/stiffness class
Impact 10.2 10.2 + + + + - once per size once per fitting
strength (drop group/fitting group
Table 16 Table 16
h
test) group
Flexibility or 10.2 10.2 + + − + + once per each once per fitting
mechanical fitting group/stiffness
Table 16 Table 16
f
strength class
a
+: test to be carried out
b
Recommended sampling procedure for a testing laboratory working for a certification body.
c
A change of the supplier does not necessarily constitute a change in compound or formulation.
d
Not to be repeated for fittings compound when the compound is the same as for pipes and already tested for that purpose.
e
To be tested in pipe form with an optional diameter.
f
Only for fabricated fittings made from more than one piece. Sealing ring retaining mean is not considered as a piece.
g
If the fitting is made from the pipe, the pipe stiffness test is sufficient.
h
Not applicable for size group 4.

NOTE 1 As long as accepted by the certification body, a witness test can be performed at a manufacturer site or
outsourced on behalf of the manufacturer.
NOTE 2 If a type test has been performed as a witness test, it does not need to be repeated.
Table 5 — Characteristics of fitness for purpose of the system that require type testing
Characteristic Reference to clause or subclause or Conditions Sampling procedure
a
tables of requiring test
...