EN 13476-3:2018+A1:2020

SLOVENSKI STANDARD
01-september-2020
Nadomešča:
SIST EN 13476-3:2018
Cevni sistemi iz polimernih materialov za odvodnjavanje 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) - 3. del: Specifikacije za cevi, fitinge z gladko notranjo in profilirano zunanjo
površino in sistem, tip B
Plastics piping systems for non-pressure underground drainage and sewerage -
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
Kunststoff-Rohrleitungssysteme für erdverlegte drucklose Abwasserkanäle und -
leitungen - Rohrleitungssysteme mit profilierter Wandung aus weichmacherfreiem
Polyvinylchlorid (PVC-U), Polypropylen (PP) und Polyethylen (PE) - Teil 3:
Anforderungen an Rohre und Formstücke mit glatter Innen- und profilierter Außenfläche
und an das Rohrleitungssystem, Typ B
Ta slovenski standard je istoveten z: EN 13476-3:2018+A1:2020
ICS:
23.040.05 Cevovodi za zunanje Pipeline and its parts for
sisteme za odpadno vodo in external sewage systems
njihovi deli
93.030 Zunanji sistemi za odpadno External sewage systems
vodo
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13476-3:2018+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2020
EUROPÄISCHE NORM
ICS 23.040.01; 93.030 Supersedes EN 13476-3:2018
English Version
Plastics piping systems for non-pressure underground
drainage and sewerage - 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
Systèmes de canalisations en plastique pour les Kunststoff-Rohrleitungssysteme für erdverlegte
branchements et les collecteurs d'assainissements 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 3:
Partie 3 : Spécifications pour les tubes et raccords avec Anforderungen an Rohre und Formstücke mit glatter
une surface interne lisse et une surface externe profilée Innen- und profilierter Außenfläche und an das
et le système, de Type B Rohrleitungssystem, Typ B
This European Standard was approved by CEN on 8 February 2018 and includes Amendment 1 approved by CEN on 12 February
2020.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13476-3:2018+A1:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, symbols and abbreviations . 10
3.1 Terms and definitions . 10
3.2 Symbols . 10
3.3 Abbreviations . 10
4 Material . 11
4.1 General . 11
4.2 Unplasticized poly(vinyl chloride) (PVC-U) . 11
4.3 Polypropylene (PP) . 12
4.4 Polyethylene (PE) . 14
4.5 Sealing rings . 15
4.6 Fused or welded joints . 16
4.7 Adhesives for PVC-U . 16
5 Designation of wall constructions and examples of typical jointing methods . 16
5.1 Wall constructions designated as Type B . 16
5.2 Designation and design of joints . 18
6 Appearance and colour . 18
7 Geometrical characteristics . 19
7.1 General . 19
7.2 Dimensions . 19
7.3 Types of fittings . 25
7.4 Design length of fittings . 25
8 Physical characteristics . 25
8.1 Unplastisized poly(vinyl chloride) (PVC-U) . 25
8.2 Polypropylene (PP) . 27
8.3 Polyethylene (PE) . 28
9 Mechanical characteristics . 29
9.1 Mechanical characteristics of pipes. 29
9.2 Mechanical characteristics of fittings . 32
10 Performance requirements . 32
11 Marking . 34
11.1 General . 34
11.2 Minimum required marking . 34
11.3 Additional marking . 36
Annex A (normative) Compound / formulation PVC-U material . 37
Annex B (normative) Utilization of non-virgin PVC-U material . 38
B.1 Own reprocessed and recycled material from pipes and fittings . 38
B.2 External reprocessed and recycled materials with agreed specifications . 38
Annex C (normative) Compound / Formulation PP material . 40
Annex D (normative) Utilization of non-virgin PP material . 41
D.1 Own reprocessed material from pipes and fittings . 41
D.2 External reprocessed and recycled materials with an agreed specification . 41
Annex E (normative)  Compound / Formulation PE material . 43
Annex F (normative) Utilization of non-virgin PE material . 44
F.1 Own reprocessed material from pipes and fittings . 44
F.2 External reprocessed and recycled materials with an agreed specification . 44
F.3 External reprocessed and recycled material from PE rotational-moulded fittings and
other components . 44
Annex G (normative) Impact test at 23 °C . 46
Annex H (normative) Impact test at −10 °C . 47
Annex I (normative) Ring flexibility test at 20 % diametric deflection . 48
Annex J (informative) Survey of possible use of reprocessed and recycled material . 49
Annex K (normative) Impact test for large diameter pipes with structured wall . 50
K.1 Principle . 50
K.2 Apparatus . 50
K.3 Test samples . 51
K.4 Conditioning . 51
K.5 Procedure . 51
K.6 Test result . 52
Bibliography . 53

European foreword
This document (EN 13476-3:2018+A1:2020) has been prepared by 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 December 2020, and conflicting national standards
shall be withdrawn at the latest by December 2020.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN not be held responsible for identifying any or all such patent rights.
This document supersedes !EN 13476-3:2018".
This document includes Amendment 1 approved by CEN on 12 February 2020.
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
!The main changes in EN 13476-3:2018 with respect to the previous edition
EN 13476-3:2007+A1:2009 are listed below:"
a) deletion of hint to Amendment 1 in Foreword;
b) deletion of Note 2 in scope;
c) updating of references in Clause 2, Tables 2, 3, 4, 8, 9, 14, 16, 17 and I.1;
d) change denomination ‘material’ to ‘compound / formulation’ (entire document);
e) reference for PVC-U adhesives added (4.7);
f) clarification requirement ‘sealing rings’ (4.5);
g) range nominal sizes extended (7.2.3.1, Table 5);
h) text sequence changed: wall thickness of sockets (7.2.5.3.3);
i) alternative test method for DCM test added in Table 8;
j) footnote d added in Table 9;
k) short sockets added (7.2.4; 11.2.1; 11.2.2)
l) impact strength at 0 °C for large diameter pipes added (Table 14);
m) Annexes A, B, D, E, F, J redrafted:
n) d changed to d in Table G.1;
im min im max
o) impact test requirements for large diameter pipes added (Annex K);
p) deletion application of recyclate without agreed specification (Annex B, D, E, F and J);
q) updated with new CEN template (entire document).
This standard is a part of a System Standard for plastics piping systems of particular materials for a
specified application. There are a number of such System Standards.
System Standards are based on the results of the work being undertaken in ISO/TC 138 “Plastics pipes,
fittings and valves for the transport of fluids”, which is a Technical Committee of the International
Organization for Standardization (ISO).
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.
EN 13476 consists of the following Parts under the general title “Plastics piping systems for non-
pressure underground drainage and sewerage - 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 (this standard);
— Part 4: Guidance for the assessment of conformity (CEN/TS).
National standards specifically for pipes and fittings for the transport of surface water are not
considered to be conflicting with this standard and may thus be allowed to coexist.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Introduction
This European Standard provides optional choices for impact resistance (see Annex G, Annex H and
Annex K) and ring flexibility (see Annex I).
As appropriate, the individual countries may select between those options in their national forewords.
1 Scope
This part of EN 13476, together with EN 13476-1, specifies the definitions and requirements for pipes,
fittings and the system based on unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and
polyethylene (PE) structured-wall piping systems that are intended to be used for non-pressure
underground drainage and sewerage systems.
This part is applicable to pipes and fittings with smooth internal and profiled external surfaces,
designated as Type B.
It specifies test methods and test parameters as well as requirements.
This part is applicable to:
a) structured-wall pipes and fittings, which are intended to be used buried underground outside the
building structure, reflected in the marking of products by “U”;
b) structured-wall pipes and fittings, which are intended to be used buried underground both outside
(application area code “U”) and within the building structure (application area code “D”), reflected
in the marking of products by “UD”.
This part is applicable to structured-wall pipes and fittings with or without an integral socket with
elastomeric ring seal joints as well as welded and fused joints.
This part covers a range of pipe and fitting sizes, materials, pipe constructions, stiffness classes,
application classes, and tolerance classes and gives recommendations concerning colours.
NOTE It is the responsibility of the purchaser or specifier to make the appropriate selections from these
aspects, taking into account their particular requirements and any relevant national regulations and installation
practices or codes.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 476, General requirements for components used in drains and sewers
EN 681-1, Elastomeric seals — Materials requirements for pipe joint seals used in water and drainage
applications — Part 1: Vulcanized rubber
EN 681-2, Elastomeric Seals — Materials requirements for pipe joint seals used in water and drainage
applications — Part 2: Thermoplastic elastomers
EN 681-4, Elastomeric seals — Materials requirements for pipe joint seals used in water and drainage
applications — Part 4: Cast polyurethane sealing elements
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
EN 1852-1, Plastics piping systems for non-pressure underground drainage and sewerage —
Polypropylene (PP) — Part 1: Specifications for pipes, fittings and the system
EN 12099, Plastics piping systems — Polyethylene piping materials and components — Determination of
volatile content
EN 12666-1, Plastics piping systems for non-pressure underground drainage and sewerage —
Polyethylene (PE) — Part 1: Specifications for pipes, fittings and the system
EN 13476-1:2018, Plastics piping systems for non-pressure underground drainage and sewerage —
Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and
polyethylene (PE) — Part 1: General requirements and performance characteristics
EN 13476-2:2018, Plastics piping systems for non-pressure underground drainage and sewerage —
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 14680, Adhesives for non-pressure thermoplastics piping systems — Specifications
EN 14758-1, Plastics piping systems for non-pressure underground drainage and sewerage —
Polypropylene with mineral modifiers (PP-MD) — Part 1: Specifications for pipes, fittings and the system
EN 15346:2014, Plastics — Recycled plastics — Characterization of poly(vinyl chloride) (PVC) recyclates
EN ISO 580, Plastics piping and ducting systems — Injection-moulded thermoplastics fittings — Methods
for visually assessing the effects of heating (ISO 580)
EN ISO 1133-1, Plastics — Determination of the melt mass-flow rate (MFR) and melt volume-flow rate
(MVR) of thermoplastics — Part 1: Standard method (ISO 1133-1)
EN ISO 1158, Plastics — Vinyl chloride homopolymers and copolymers — Determination of chlorine
content (ISO 1158)
EN ISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids —
Determination of the resistance to internal pressure — Part 1: General method (ISO 1167-1)
EN ISO 1167-2, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids —
Determination of the resistance to internal pressure — Part 2: Preparation of pipe test pieces (ISO 1167-2)
EN ISO 1183-1, Plastics — Methods for determining the density of non-cellular plastics — Part 1:
Immersion method, liquid pyknometer method and titration method (ISO 1183-1)
EN ISO 2507-1, Thermoplastics pipes and fittings — Vicat softening temperature — Part 1: General test
method (ISO 2507-1)
EN ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions (ISO 3126)
EN ISO 3127, Thermoplastics pipes — Determination of resistance to external blows — Round-the-clock
method (ISO 3127)
EN ISO 3451-1, Plastics — Determination of ash — Part 1: General methods (ISO 3451-1)
EN ISO 6259-1, Thermoplastics pipes — Determination of tensile properties — Part 1: General test
method (ISO 6259-1)
EN ISO 9852, Unplasticized poly(vinyl chloride) (PVC-U) pipes — Dichloromethane resistance at specified
temperature (DCMT) — Test method (ISO 9852)
EN ISO 9967, Thermoplastics pipes — Determination of creep ratio (ISO 9967)
EN ISO 9969, Thermoplastics pipes — Determination of ring stiffness (ISO 9969)
EN ISO 11173, Thermoplastics pipes — Determination of resistance to external blows — Staircase method
(ISO 11173)
EN ISO 11357-6, Plastics — Differential scanning calorimetry (DSC) — Part 6: Determination of oxidation
induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) (ISO 11357-6)
EN ISO 13229, Thermoplastics piping systems for non-pressure applications — Unplasticized poly(vinyl
chloride) (PVC-U) pipes and fittings — Determination of the viscosity number and K-value (ISO 13229)
EN ISO 13254, Thermoplastics piping systems for non-pressure applications — Test method for
watertightness (ISO 13254)
EN ISO 13257:2017, Thermoplastics piping systems for non-pressure applications — Test method for
resistance to elevated temperature cycling (ISO 13257:2010)
EN ISO 13260, Thermoplastics piping systems for non-pressure underground drainage and sewerage —
Test method for resistance to combined temperature cycling and external loading (ISO 13260)
EN 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
(ISO 13262)
EN ISO 13263, Thermoplastics piping systems for non-pressure underground drainage and sewerage —
Thermoplastics fittings — Test method for impact strength (ISO 13263)
EN ISO 13264, Thermoplastics piping systems for non-pressure underground drainage and sewerage —
Thermoplastics fittings — Test method for mechanical strength or flexibility of fabricated fittings (ISO
13264)
EN ISO 13967, Thermoplastics fittings — Determination of ring stiffness (ISO 13967)
EN ISO 13968, Plastics piping and ducting systems — Thermoplastics pipes — Determination of ring
flexibility (ISO 13968)
ISO 6259-2, Thermoplastics pipes — Determination of tensile properties — Part 2: Pipes made of
unplasticized poly(vinyl chloride) (PVC-U), chlorinated poly (vinyl chloride) (PVC-C) and high-impact poly
(vinyl chloride) (PVC-HI)
ISO 12091, Structured-wall thermoplastics pipes — Oven test
ISO 13259, Thermoplastics piping systems for underground non-pressure applications — Test method for
leaktightness of elastomeric sealing ring type joints
ISO 18373-1, Rigid PVC pipes — Differential scanning calorimetry (DSC) method — Part 1: Measurement
of the processing temperature
3 Terms, definitions, symbols and abbreviations
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 13476-1:2018 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/ob
3.2 Symbols
A length of engagement, or maximum pull-out whilst maintaining tightness
C length of the sealing zone
d outside diameter
e
dem mean outside diameter
d mean inside diameter
im
d nominal diameter
n
d minimum mean inside diameter of socket
sm,min
e wall thickness (at any point)
e construction height
c
e minimum wall thickness of pipe or spigot
min
e wall thickness at any point of the cylindrical part of a socket
e wall thickness at any point of a sealing ring groove of a socket
e wall thickness of the inside layer (waterway wall thickness)
e wall thickness of the inside layer under a hollow section
F distance from the end of a spigot to the effective sealing point
l effective length of a pipe
L minimum length of a spigot
1,min
S actual stiffness of the cylindrical part of the socket
so
S actual stiffness of the spigot
sp
IMP 23C impact resistance determined at +23 °C
impact resistance determined at −10 °C
❄
3.3 Abbreviations
CaCO calcium carbonate
CT close tolerance
DN nominal size
DN/ID nominal size related to inside
diameter
DN/OD nominal size related to outside
diameter
H50 value for impact resistance of a pipe
MgCO magnesium carbonate
MFR melt mass-flow rate
Mg Si O (OH) magnesium silicate, talcum
3 4 10 2
OIT oxidation induction time
PE polyethylene
PP polypropylene
PP-MD mineral modified PP
PVC-U unplasticized poly(vinyl chloride)
RF ring flexibility performance
S pipe series S
SDR standard dimension ratio
SN ring stiffness class
TIR true impact rate
TPE thermoplastic elastomer
VST Vicat softening temperature
4 Material
4.1 General
The material shall be one of the following: unplasticized poly(vinyl chloride) (PVC-U), polypropylene
(PP) or polyethylene (PE), to which are added additives needed to facilitate the manufacture of
components conforming to this standard, including the relevant annexes.
Spirally formed pipes may include a support profile (see Figure 1) made from polymers other than PVC-
U, PP or PE.
Spirally formed pipe constructions may include a continuous elastomeric sealing component of a
material conforming to EN 681-1, EN 681-2 or EN 681-4 as applicable, or a continuous adhesive
conforming to 4.7.
4.2 Unplasticized poly(vinyl chloride) (PVC-U)
4.2.1 General
The compound / formulation shall be PVC-U to which are added those additives needed to facilitate the
manufacture of components conforming to the requirements of this standard (see also Annex A).
NOTE Additional information of the characteristics of PVC-U compound / formulation and components made
thereof is given in Annex A of EN 13476-1:2018.
4.2.2 Pipe and fitting compound / formulation characteristics
When tested in accordance with the test method as specified in Table 1, using the indicated parameters,
the compound / formulation shall have characteristics conforming to the requirements given in Table 1.
Table 1 — Compound / formulation characteristics of PVC-U pipes and injection-moulded
fittings
Characteristic Requirements Test parameters Test method
Resistance to No failure End caps Type A or Type B EN ISO 1167-1
internal during the test and
Orientation Free
a, b
pressure period EN ISO 1167-2

Number of test pieces 3
Test temperature 60 °C
Circumferential stress 10 MPa
for pipe compound /
formulation
Circumferential stress 6,3 MPa
for fitting compound /
formulation
Conditioning period Shall conform to
EN ISO 1167-1
Type of test Water-in-water
Test period 1 000 h
a
For extrusion compounds this test shall be carried out in the form of a solid wall pipe made from the relevant
extrusion compound / formulation.
b
For injection-moulding compounds this test shall be carried out in the form of an injection-moulded or
extruded sample in solid wall pipe form made from the relevant compound/formulation.

4.2.3 Utilization of non-virgin materials
For the utilization of non-virgin PVC-U materials conditions and requirements are given in Annex B.
NOTE Annex J gives a survey of the possible use of reprocessed and recycled materials.
4.3 Polypropylene (PP)
4.3.1 General
The compound / formulation for pipes and fittings shall be PP base material to which are added those
additives that are needed to facilitate the manufacture of components conforming to the requirements
of this standard. See also Annex C.
NOTE Additional information of the characteristics of PP compound / formulation or components made
thereof is given in EN 13476-1:2018, Annex A.
4.3.2 Pipe and fitting compound / formulation characteristics
When tested in accordance with the test methods as specified in Table 2, using the indicated
parameters, the compound / formulation shall have characteristics conforming to the requirements
given in Table 2.
Table 2 — Compound / formulation characteristics of PP pipes and injection-moulded fittings
Characteristic Requirements Test parameters Test method
Resistance to No failure during End caps Type A or Type B EN ISO 1167-1 and
internal the test period Test temperature 80 °C EN ISO 1167-2
pressure, Orientation Free
a, b Number of test pieces 3
140 h
Circumferential stress 4,2 MPa

Conditioning period Shall conform to
EN ISO 1167-1
Type of test Water-in-water
Test period 140 h
Resistance to No failure during End caps Type A or B EN ISO 1167-1 and
internal the test period Test temperature 95 °C EN ISO 1167-2
pressure Orientation Free
a, b Number of test pieces 3
1 000 h
Circumferential stress 2,5 MPa

Conditioning period Shall conform to
EN ISO 1167-1
Type of test Water-in-water
Test period 1 000 h
Melt mass-flow ≤ 1,5 g/10 min Temperature 230 °C EN ISO 1133-1
rate Loading mass 2,16 kg
Thermal ≥ 8 min Temperature 200 °C EN ISO 11357-6
stability, OIT
a
For extrusion compounds this test shall be carried out in the form of a solid wall pipe made from the relevant
Compound / formulation.
b
For injection-moulding compounds this test shall be carried out in the form of an injection-moulded, or extruded
sample in solid wall pipe form made from the relevant material.

4.3.3 Melt mass-flow rate classification
Compound / formulation for pipes and fittings intended for jointing in field by fusion or welding shall
be designated by the following MFR classes:
— Class A: MFR ≤ 0,3 g/10 min;
— Class B: 0,3 g/10 min < MFR ≤ 0,6 g/10 min;
— Class C: 0,6 g/10 min < MFR ≤ 0,9 g/10 min;
— Class D: 0,9 g/10 min < MFR ≤ 1,5 g/10 min.
In the case where a raw material because of its MFR tolerance arbitrarily fall in one of two adjacent
classes the manufacturer of the components may mark the MFR class on the product as follows:
— MFR value across the border between A and B it is permitted to classify as class A;
— MFR value across the border between B and C it is permitted to classify as class C;
— MFR value across the border between C and D it is permitted to classify as class D.
4.3.4 Utilization of non-virgin materials
For the utilization of non-virgin PP materials conditions and requirements are given in Annex D.
NOTE Annex J gives a survey of the possible use of reprocessed and recycled materials.
4.4 Polyethylene (PE)
4.4.1 General
The compound for pipes and fittings shall be PE based material to which are added those additives that
are needed to facilitate the manufacture of components conforming to the requirements of this
document. See also Annex E.
NOTE Additional information of the characteristics of PE material or components made thereof is given in
Annex A of EN 13476-1:2018.
4.4.2 Compound / formulation characteristics of pipes and injection-moulded fittings
When tested in accordance with the test method as specified in Table 3, using the indicated parameters,
the Compound / formulation shall have characteristics conforming to the requirements given in
Table 3.
Table 3 — Compound / formulation characteristics of PE pipes and injection-moulded fittings
Characteristic Requirements Test parameters Test method
Resistance to No failure during End caps Type A or Type B EN ISO 1167-1
internal the test period Test temperature 80 °C
EN ISO 1167-2
a,
pressure 165 h Orientation Free
b
Number of test pieces 3
Circumferential stress 4,0 MPa

Conditioning period Shall conform to
EN ISO 1167-1
Type of test Water-in-water
Test period 165 h
Resistance to No failure during End caps Type a or b EN ISO 1167-1
internal the test period Test temperature 80 °C EN ISO 1167-2
pressure 1 000 h Orientation Free
a, b
Number of test pieces 3
Circumferential stress 2,8 MPa

Conditioning period Shall conform to
EN ISO 1167-1
Type of test Water-in-water
Test period 1 000 h
Melt mass-flow ≤ 1,6 g/10 min Temperature 190 °C EN ISO 1133-1
rate Loading mass 5 kg
Thermal ≥ 20 min Temperature 200 °C EN ISO 11357-6
stability, OIT
Density ≥ 930 kg/m Shall conform to EN ISO 1183-1 EN ISO 1183-1
a
This test shall be carried out in the form of a solid wall pipe made from the relevant extrusion material.
b
For injection-moulding compounds this test shall be carried out in the form of an injection-moulded, or extruded
sample in pipe form made from the relevant material.

4.4.3 Compound / formulation characteristics of rotational-moulded fittings
When tested in accordance with the test methods as specified in Table 4, using the indicated
parameters, the compound / formulation shall have characteristics conforming to the requirements
given in Table 4.
Table 4 — Compound / formulation characteristics of PE rotational-moulded fittings
Characteristic Requirements Test parameters Test
Resistance to No failure during End caps Type A or Type B EN ISO 1167-1
internal pressure the test period Orientation Free EN ISO 1167-2
a
165 h Number of test pieces 3
Temperature 60 °C
Circumferential stress 3,9 MPa
Conditioning period Shall conform to
EN ISO 1167-1
Type of test Water-in-water
Test period 165 h
Resistance to No failure during End caps Type A or Type B EN ISO 1167-1
internal pressure the test period Orientation Free EN ISO 1167-2
a
1 000 h Number of test pieces 3
Temperature 60 °C
Circumferential stress 3,2 MPa
Conditioning period Shall conform to
EN ISO 1167-1
Type of test Water-in-water
Test period 1 000 h
Melt mass-flow 3 g/10 Temperature 190 °C EN ISO 1133-1
rate min ≤ MFR ≤ 16 g Loading mass 5 Kg
/10 min
Thermal stability ≥ 10 min Temperature 200 °C EN ISO 11357-6
OIT
Density ≥ 925 kg/m Temperature (23 ± 2) °C EN ISO 1183-1
a
This test shall be carried out in the form of an injection-moulded, or extruded sample in solid wall pipe form made
from the relevant Compound / formulation.

4.4.4 Utilization of non-virgin materials
For the utilization of non-virgin PE materials conditions and requirements are given in Annex F.
NOTE Annex J gives a survey of the possible use of reprocessed and recycled materials.
4.4.5 Sealing ring retaining components
It is permitted that sealing rings are retained using components made from any polymer.
4.5 Sealing rings
The sealing ring material shall conform to all the requirements in EN 681-1, EN 681-2 or EN 681-4, as
applicable.
The sealing ring shall have no detrimental effects on the properties of the components and shall not
cause the test assembly to fail the performance requirements given in Clause 10.
4.6 Fused or welded joints
The design of fused or welded joints together with the manufacturer's instructions for the jointing
process shall not cause the test assembly to fail the performance requirements given in Clause 10.
4.7 Adhesives for PVC-U
The adhesive for jointing of PVC-U shall be solvent cement and shall be as specified by the manufacturer
of the pipes or fittings where appropriate.
The adhesive shall have no detrimental effects on the properties of the pipe and of the fittings and shall
not cause the test assembly to fail the performance requirements given in Clause 10.
The adhesive shall comply with EN 14680.
As an alternative, adhesive complying with EN 14814 are deemed to be suitable for U and UD
applications.
5 Designation of wall constructions and examples of typical jointing methods
NOTE The figures are schematic sketches only to indicate the relevant dimensions. They do not necessarily
represent the manufactured components.
5.1 Wall constructions designated as Type B
5.1.1 Ribbed or corrugated construction
A pipe or fitting with a smooth internal surface and a profiled external surface shall be designated
Type B.
Typical examples of Type B constructions are shown in Figure 1.
Key
1 supporting profile
Figure 1 — Typical examples of wall construction type B
5.1.2 Typical jointing methods for structured-wall type B
Relevant jointing dimensions for typical Type B joint constructions are shown in Figure 2 and Figure 3.
The position of the sealing ring on the spigot should be as specified by the manufacturer.
Figure 2 — Typical examples of elastomeric sealing ring joints with the sealing
ring located on the spigot, Type B

Figure 3 — Typical example of an elastomeric sealing ring joint with sealing
ring located in the socket, Type B
5.2 Designation and design of joints
Pipes and fittings may be designed with spigot ends and sockets of another construction than the pipe
or fitting body. Such constructions may be Type A1, Type A2, Type B or as designed in other product
standards. For definitions and specifications for Type A1 and Type A2 pipes, see EN 13476-2.
NOTE Joints with elastomeric sealing rings are designed either with the sealing ring positioned on the spigot
(see Figure 2), or in the socket, see Figure 3.
6 Appearance and colour
The appearance and colour of the components shall conform to EN 13476-1.
7 Geometrical characteristics
7.1 General
All dimensions shall be measured in accordance with EN ISO 3126.
7.2 Dimensions
7.2.1 Designation
Pipes and fittings are sized either according to their outside diameter (DN/OD-series) and/or according
to their inside diameter (DN/ID-series).
DN/OD pipes and fittings Type B with plain spigot jointing dimensions conforming to EN 1401-1,
EN 1852-1, EN 14758-1 or EN 12666-1 for PVC-U, PP, PP-MD and PE, and with larger d than the spigot,
e
may be designated by the spigot dimension.
NOTE Because of the permitted variations in geometric details, conformity to this standard does not ensure
inter- changeability of pipes, fittings and other components from different manufacturers and/or different designs
other than for Type A1 and components that have jointing dimensions in accordance with EN 1401-1, EN 1852-1,
EN 14758-1 or EN 12666-1.
EN 1852-1, EN 12666-1 and EN 14758-1 includes two sets of tolerances on the outside diameters of
spigots.
7.2.2 Lengths of pipe
The effective length of pipe l, shall not be less than that specified by the manufacturer when measured
as shown in Figure 2 or Figure 3.
7.2.3 Diameters of Type B pipes and spigots of pipes or fittings
7.2.3.1 Nominal sizes
Preferred nominal sizes and minimum mean inside diameters for DN/OD and DN/ID series are
specified in Table 5.
Other nominal sizes, greater than DN/ID 100 and DN/OD 110 and less than DN/OD 3 000 and DN/ID
3 000, than given in Table 5, are permitted. They should preferably be selected from the Renard series
R40, ISO 3, or traditional national dimensions.
In such cases the nominal size DN/ID of pipes and fittings shall be selected in such a way that the
designed minimum mean inside diameter d , conforms to the requirement to maximum limit
im,min
deviations on internal diameters in EN 476.
For DN/ODs and DN/IDs not specified in Table 5, the minimum inside diameter d , shall be linearly
im,min
interpolated between the adjacent values specified in Table 5.
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