SIST EN 1401-1:2019+A1:2023

SLOVENSKI STANDARD
01-junij-2023
Cevni sistemi iz polimernih materialov za odpadno vodo in kanalizacijo, ki delujejo
po težnostnem principu in so položeni v zemljo - Nemehčan polivinilklorid (PVC-U)
- 1. del: Specifikacije za cevi, fitinge in sistem (Vključuje dopolnilo A1)
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
Kunststoff-Rohrleitungssysteme für erdverlegte drucklose Abwasserkanäle und -
leitungen - Weichmacherfreies Polyvinylchlorid (PVC-U) - Teil 1: Anforderungen an
Rohre, Formstücke und das Rohrleitungssystem
Systèmes de canalisations en plastique pour les branchements et les collecteurs
d'assainissement enterrés sans pression - Poly(chlorure de vinyle) non plastifié (PVC-U)
- Partie 1 : Spécifications pour tubes, raccords et le système
Ta slovenski standard je istoveten z: EN 1401-1:2019+A1:2023
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.

EN 1401-1:2019+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2023
EUROPÄISCHE NORM
ICS 23.040.01 Supersedes EN 1401-1:2019
English Version
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
Systèmes de canalisations en plastique pour les Kunststoff-Rohrleitungssysteme für erdverlegte
branchements et les collecteurs d'assainissement drucklose Abwasserkanäle und -leitungen -
enterrés sans pression - Poly(chlorure de vinyle) non Weichmacherfreies Polyvinylchlorid (PVC-U) - Teil 1:
plastifié (PVC-U) - Partie 1 : Spécifications pour tubes, Anforderungen an Rohre, Formstücke und das
raccords et le système Rohrleitungssystem
This European Standard was approved by CEN on 12 May 2019 and includes Amendment 1 approved by CEN on 21 January
2023.
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, 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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1401-1:2019+A1:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
4 Symbols and abbreviations . 11
4.1 Symbols . 11
4.2 Abbreviations . 12
5 Material . 12
5.1 General . 12
5.2 Use of mineral modifier . 12
5.3 Pipe material . 13
5.4 Fitting material . 13
5.5 Fabricated fitting material . 14
5.6 Utilization of non-virgin material . 14
5.7 Sealing ring retaining means material . 14
6 General characteristics . 15
6.1 Appearance . 15
6.2 Colour . 15
7 Geometrical characteristics . 15
........................ 15
7.1 General .
7.2 Dimensions of pipes . 15
7.2.1 Outside diameters . 15
7.2.2 Out of roundness . 16
7.2.3 Length of pipes . 16
7.2.4 Chamfering . 17
7.2.5 Wall thickness . 17
7.3 Dimensions of fittings . 18
7.3.1 Outside diameters . 18
7.3.2 Design lengths (Z) . 18
7.3.3 Wall thicknesses . 19
7.4 Dimensions of sockets and spigots . 19
7.4.1 Elastomeric ring seal sockets and spigots . 19
7.4.2 Adhesive joint sockets and spigots . 23
7.5 Types of fittings . 24
8 Mechanical characteristics . 27
8.1 Mechanical characteristics of pipes . 27
8.1.1 General requirements . 27
8.1.2 Additional mechanical requirements . 28
8.2 Mechanical characteristics of fittings . 29
8.2.1 Ring stiffness class . 29
8.2.2 Additional requirements. 29
9 Physical characteristics . 30
9.1 Physical characteristics of pipes . 30
9.2 Physical characteristics of fittings . 32
10 Performance requirements . 32
11 Sealing rings . 33
12 Adhesives . 33
13 Marking . 34
13.1 General. 34
13.2 Minimum required marking of pipes . 34
13.3 Minimum required marking of fittings . 35
13.4 Additional marking . 35
Annex A (normative) Utilization of non-virgin material . 36
A.1 General. 36
A.2 Own reprocessed material . 36
A.3 External reprocessed and/or recycled materials with agreed specifications . 36
Annex B (informative) General characteristics of PVC-U pipes and fittings . 38
B.1 General. 38
B.2 Formulation characteristics. 38
B.3 Creep ratio . 38
B.4 Chemical resistance . 38
B.5 Abrasion resistance . 38
B.6 Hydraulic roughness . 39
B.7 Diametric deflection . 39
Annex C (informative) Product standards . 40
Bibliography . 41

European foreword
This document (EN 1401-1:2019+A1:2023) 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 October 2023, and conflicting national standards
shall be withdrawn at the latest by October 2023.
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 includes Amendment 1 approved by CEN on 21 January 2023.
This document supersedes !EN 1401-1:2019".
The start and finish of text introduced or altered by amendment is indicated in the text by tags
!".
This revision of the EN 1401 series is proposed by CEN/TC155/WG6 members in order to improve
the "level of sustainability" and the "environmental impact" of PVC piping systems, whilst improving
the recommendations and safe use of recycled material. Recycled material is categorized as non-
virgin material in this document.
Regarding this specific target, some superfluous requirements and inconsistencies existing in the old
version of EN 1401-1 were deleted, and more focus was given to the control of applied formulation
and to the final characteristics and performance of products.
Compared to the previous version, the main changes are listed below:
a) clarification of product covered (Clause 1);
b) introduction of a new pipe series SN 16 (SDR 27,6) (7.2.5 and 7.4.1.2);
c) deletion of former clause on dimension of "o-ring type joints";
d) complete review of non-virgin (recyclates) material use (Clause 5 and Annex A);
e) addition of a footnote e) to Table 14 for DSC to lower the minimum B-onset temperature to
180 °C for formulation with CaZn stabilizers.
This document is a Part of a System Standard for plastics piping systems of a particular material for a
specified application. There are a number of such System Standards.
System Standards are based on the results of the work 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 1401 consists of the following parts, under the general title 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 (this document);
— Part 2: Guidance for assessment of conformity (CEN/TS under revision).
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 organizations 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,
Türkiye and the United Kingdom.
1 Scope
This document specifies the requirements for solid wall pipes with smooth internal and external
surfaces, extruded from the same formulation throughout the wall, fittings and the system of
unplasticized poly(vinyl chloride) (PVC-U) piping systems in the field of non-pressure underground
drainage and sewerage:
— buried in ground outside the building structure (application area code "U"), and
— both buried in ground, within the building structure and outside the building (application area
code "UD").
NOTE 1 The intended use is reflected in the marking of products by "U" or "UD".
It also specifies the test parameters for the test methods referred to in this document.
NOTE 2 Multilayer pipes with different formulations throughout the wall and foamed core pipes are covered
by EN 13476-2 [1].
This document covers a range of nominal sizes, a range of pipes and fittings series and a range of
stiffness classes and gives recommendations concerning colours.
NOTE 3 It is the responsibility of the purchaser or specifier to make the appropriate selection from these
aspects, taking into account their particular requirements and any relevant national regulations and
installation practices or codes.
It is applicable to PVC-U pipes and fittings, their joints and to joints with components of other plastics
and non-plastics materials intended for buried piping systems for non-pressure underground
drainage and sewerage.
NOTE 4 Pipes, fittings and other components conforming to any of the plastics product standards listed in
Annex C can be used with pipes and fittings conforming to this document, provided they conform to the
requirements for joint dimensions given in Clause 7 and to the requirements of Table 16.
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 681-1, Elastomeric seals — Material 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 14680, Adhesives for non-pressure thermoplastics piping systems — Specifications
EN 14814, Adhesives for thermoplastic piping systems for fluids under pressure — Specifications
EN ISO 472:2013, Plastics — Vocabulary (ISO 472:2013)
EN ISO 580, Plastics piping and ducting systems — Injection-moulded thermoplastics fittings —
Methods for visually assessing the effects of heating (ISO 580)
EN ISO 1043-1:2011, Plastics — Symbols and abbreviated terms — Part 1: Basic polymers and their
special characteristics (ISO 1043-1:2011)
!EN ISO 1158, Plastics - Vinyl chloride homopolymers and copolymers - Determination of chlorine
content (ISO 1158)"
EN ISO 1167-1:2006, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids —
Determination of the resistance to internal pressure — Part 1: General method (ISO 1167-1:2006)
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 pycnometer method and titration method (ISO 1183-1)
EN ISO 2505, Thermoplastics pipes — Longitudinal reversion — Test method and parameters
(ISO 2505)
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 3451-5, Plastics — Determination of ash — Part 5: Poly(vinyl chloride) (ISO 3451-5)
EN ISO 6259-1, Thermoplastics pipes — Determination of tensile properties — Part 1: General test
method (ISO 6259-1)
!EN ISO 6259-2, Thermoplastics pipes - Determination of tensile properties - Part 2: Pipes made of
unplasticized poly(vinyl chloride) (PVC-U), oriented unplasticized poly(vinyl chloride (PVC-O),
chlorinated poly (vinyl chloride) (PVC-C) and high-impact poly (vinyl chloride) (PVC-HI) (ISO 6259-
2)"
EN ISO 9852, Unplasticized poly(vinyl chloride) (PVC-U) pipes — Dichloromethane resistance at
specified temperature (DCMT) — Test method (ISO 9852)
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 13254, Thermoplastics piping systems for non-pressure applications — Test method for
watertightness (ISO 13254)
EN ISO 13257, Thermoplastics piping systems for non-pressure applications — Test method for
resistance to elevated temperature cycling (ISO 13257)
EN ISO 13259, Thermoplastics piping systems for underground non-pressure applications — Test
method for leaktightness of elastomeric sealing ring type joints (ISO 13259)
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)
ISO 18373-1, Rigid PVC pipes — Differential scanning calorimetry (DSC) method — Part 1:
Measurement of the processing temperature
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 472:2013 and
EN ISO 1043-1:2011 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
application area code
code used in the marking of pipes and fittings to indicate the application area(s) for which they are
intended, as follows:
U:  code for the area more than 1 m from the building to which the buried piping system is
connected;
D:  code for 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
Note 1 to entry: In "D" application areas, the existence of hot water discharge in addition to external forces
from the surroundings is usual.
Note 2 to entry: Components intended for use for both code U and code D application areas are marked UD.
Note 3 to entry: Other application area codes B and BD not covered by this standard are defined elsewhere,
e.g. in EN 1329-1 [2].
3.2
nominal size
DN
numerical designation of the size of a component, other than a component designated by thread size,
which is approximately equal to the manufacturing dimension, in millimetres (mm)
3.3
nominal size, outside diameter related
DN/OD
nominal size, related to the outside diameter
3.4
nominal outside diameter
d
n
specified outside diameter, in millimetres, assigned to a nominal size DN/OD
3.5
outside diameter
d
e
value of the measurement of the outside diameter through its cross section at any point of a pipe or
spigot, rounded to the next greater 0,1 mm
3.6
mean outside diameter
d
em
value of the measurement of the outer circumference of a pipe or spigot end of a fitting in any cross
section, divided by π (≈ 3,142), rounded to the next greater 0,1 mm
3.7
mean inside diameter of a socket
d
sm
arithmetical mean of a number of measurements of the inside diameter of a socket in the same cross-
section
3.8
out-of-roundness
ovality
difference between the measured maximum and the measured minimum outside diameter in the
same cross section of a component
3.9
wall thickness
e
value of measurement of the wall thickness at any point around the circumference of a component
3.10
mean wall thickness
e
m
arithmetical mean of a number of measurements of the wall thickness, regularly spaced around the
circumference and in the same cross section of a component, including the measured minimum and
the measured maximum values of the wall thickness in that cross section
3.11
standard dimension ratio
SDR
numerical designation of a pipe series, which is a convenient round number, approximately equal to
the ratio of the nominal outside diameter d of а pipe to its nominal wall thickness e
n n
3.12
ring stiffness class
SN
numerical designation of the ring stiffness of the pipe or fitting which is a convenient round number,
indicating the minimum required ring stiffness of the pipe or stiffness of the fitting
3.13
solid wall pipe
pipe with smooth internal and external surfaces extruded from the same formulation throughout the
wall
Note 1 to entry: Pipes having more than one layer are considered as solid wall pipes, provided they are all
made from the same formulation.
3.14
fabricated fittings
fittings produced from pipe and/or from injection-moulded fittings by thermoforming, adhesive joint
or welding
Note 1 to entry: Fabricated fittings need an additional fabrication step.
3.15
virgin material
material in a form such as granules or powder that has not been subjected to use or processing other
than that required for its manufacture
Note 1 to entry: Virgin material is a material to which no own and/or external reprocessed or recycled
material has been added.
Note 2 to entry: It is understood that the addition of additives such as stabilizers and pigments is still
resulting into a virgin material.
3.16
non-virgin material
all material which is not defined as virgin material
Note 1 to entry: It covers own reprocessed material, external reprocessed materials and recycled materials.
3.16.1
own reprocessed material
material prepared from rejected unused pipes, gutters, fittings and ancillaries, including trimmings
from the production, that will be reprocessed in a manufacturer’s plant after having been previously
processed by the same manufacturer by a process such as moulding or extrusion and for which the
complete formulation is known
3.16.2
external reprocessed material
material prepared from unused thermoplastics products regardless of where those products were
manufactured
Note 1 to entry: External reprocessed material is often called post-industrial recyclate.
3.16.3
recycled material
material prepared from used thermoplastic products which have been cleaned and crushed or
ground
Note 1 to entry: Recycled material is often called post-consumer recyclate.
3.17
agreed specification
specification of the relevant material characteristics agreed between the supplier of the non-virgin
material and the pipes and/or fittings manufacturer
4 Symbols and abbreviations
4.1 Symbols
A length of engagement
a circumferential side cover of a saddle branch
c
α nominal angle of a fitting
C depth of sealing zone
d outside diameter
e
d mean outside diameter
em
d nominal outside diameter
n
d inside diameter of a socket
s
d mean inside diameter of a socket
sm
e wall thickness
e mean wall thickness
m
e minimum wall thickness
min
e wall thickness of a socket
e wall thickness in the groove area
H length of chamfer
L axial cover of a saddle branch
L length of spigot
L length of adhesive joint socket
l effective length of a pipe
M length of spigot of a plug
R radius of swept fittings
Z design length of a fitting
4.2 Abbreviations
DN nominal size
DN/OD nominal size, outside diameter related
PVC-U unplasticized poly(vinyl chloride)
SDR standard dimension ratio
SN ring stiffness class
TIR true impact rate
5 Material
5.1 General
The formulation shall be a mixture of PVC to which are added additives and if applicable non-virgin
material that shall allow the final product to comply with the requirements of this document.
NOTE Additional information on general characteristics of PVC-U pipes and fittings is given in Annex B.
Non-virgin material (either supplied externally or own reprocessed or a mixture of both) may be
used in the conditions given in 5.6.
The formulation (including non-virgin materials if applicable) shall comply with the requirements
given in Table 1 and in 5.3 for pipes and 5.4 for fittings.
!
Table 1 — Requirements applicable for the formulation
Characteristics Requirements Test method
a b c
PVC content for pipes ≥ 80 % by mass Calculation or EN ISO 1158
c
or EN ISO 3451-5, Method A
PVC content for injection- ≥ 85 % by mass
moulded fittings
3 3
Density 1 350 kg/m ≤ density ≤ 1 600 kg/m
a
A further reduction of the PVC content is permitted according to 5.2.
b
The PVC content is equal to (mcl/56,8) x 100, where mcl is the chlorine content expressed as a percentage
by mass in accordance with EN ISO 1158.
c
The measurement of filler content by ash rest is an alternative to the measurement of PVC content and is
recommended when external reprocessed and/or recycled material is used.
"
5.2 Use of mineral modifier
A reduction of the PVC content to ≥ 75 % by mass is permitted for pipes only provided the PVC is
substituted by coated or uncoated CaCO conforming to the following:
a) The composition of the CaCO , before coating if any, shall conform to the following:
1) content of CaCO ≥ 96 % by mass;
2) content of MgCO ≤ 4 % by mass;
3) content of CaCO and MgCO in total ≥ 98 % by mass.
3 3
b) The physical properties of the material shall conform to the following:
4) mean particle size D50 ≤ 2,5 μm;
5) top cut D98 ≤ 20 μm.
5.3 Pipe material
When tested in accordance with the test method as specified in Table 2, using the indicated
parameters, the pipe formulation shall have characteristics conforming to the requirements given in
Table 2.
The pipe formulation shall be tested in the form of a pipe.
Table 2 — Formulation characteristics of pipes
Characteristic Requirements Test parameters Test method
Resistance to No failure End caps Type A or B EN ISO 1167-1:2006
internal during the test and EN ISO 1167-2
Test temperature 60 °C
pressure period
Orientation Free
Number of test
pieces
Circumferential
10 MPa
(hoop) stress
Conditioning period 1 h
Type of test Water-in-water
Test period 1 000 h
5.4 Fitting material
When tested in accordance with the test method as specified in Table 3, using the indicated
parameters, the fitting formulation shall have characteristics conforming to the requirements given
in Table 3.
The fitting formulation shall be tested in the form of an extruded or injection-moulded pipe.
Table 3 — Formulation characteristics of fittings
Characteristic Requirements Test parameters Test method
Resistance to No failure End caps Type A or B
EN ISO 1167-1:2006
internal during the test conforming to
and EN ISO 1167-2
pressure period EN ISO 1167-1:2006
Dimensions 50 mm ≤ d ≤ 110 mm
n
3 mm ≤ e ≤ 5 mm
Free length for
≥ 140 mm
injection-moulded pipe
Test temperature 60 °C
Orientation Free
Number of test pieces 3
Circumferential (hoop)
6,3 MPa
stress
Conditioning period 1 h
Type of test Water-in-water
Test period 1 000 h
5.5 Fabricated fitting material
Fabricated fittings shall be made from parts of pipes and/or injection moulded fittings conforming to
this document.
5.6 Utilization of non-virgin material
Conditions for the utilization of non-virgin material are given in Annex A. The maximum allowed
amount of non-virgin material is given in Table 4.
Test results with the maximum specified amount of non-virgin material with the same agreed
specification shall be taken as proving conformity of products containing a lower amount.
Table 4 — Maximum allowed amount of non-virgin material
External reprocessed External reprocessed
Own reprocessed and recycled material and recycled material
Products
material with agreed without agreed
specification specification
Pipes 100 % 20 % Not permitted
Fittings 100 % 20 % Not permitted
5.7 Sealing ring retaining means material
Sealing rings may be retained using means made from polymers other than PVC-U, provided the
joints conform to the requirements given in Clause 10.
6 General characteristics
6.1 Appearance
When viewed without magnification, the following requirements apply:
— internal and external surfaces of pipes and fittings shall be smooth, clean and free from grooving,
blistering, impurities and pores and any other surface irregularity likely to prevent their
conformity to this document;
— pipe ends shall be cleanly cut and the ends of pipes and fittings shall be square to their axis.
6.2 Colour
The pipes and the fittings shall have the same colour through the wall.
1) 1)
The recommended colour of pipes and fittings is orange-brown (RAL 8023 ) or grey (RAL 7037 ).
7 Geometrical characteristics
7.1 General
Dimensions shall be measured in accordance with EN ISO 3126.
NOTE All figures in this document are schematic sketches only, to indicate the relevant dimensions. They
do not necessarily represent the manufactured components.
7.2 Dimensions of pipes
7.2.1 Outside diameters
The mean outside diameter, d , shall conform to Table 5.
em
1) According to RAL 840-HR, Colour register [3].
Table 5 — Mean outside diameters
Dimensions in millimetres
Nominal size Nominal outside Mean outside diameter
diameter
DN/OD d d d
n em,min em,max
110 110 110,0 110,3
125 125 125,0 125,3
160 160 160,0 160,4
200 200 200,0 200,5
250 250 250,0 250,5
315 315 315,0 315,6
355 355 355,0 355,7
400 400 400,0 400,7
450 450 450,0 450,8
500 500 500,0 500,9
630 630 630,0 631,1
710 710 710,0 711,2
800 800 800,0 801,3
900 900 900,0 901,5
1 000 1 000 1 000,0 1 001,6
7.2.2 Out of roundness
The out-of-roundness, measured directly after production, shall be less than or equal to 0,024 d .
n
7.2.3 Length of pipes
The effective length of a pipe, l, shall be not less than that declared by the manufacturer when
measured as shown in Figure 1.
Figure 1 — Effective length of pipes
7.2.4 Chamfering
If a chamfer is applied, the angle of chamfering shall be between 15° and 45° to the axis of the pipe
(see Figure 2 and Table 7 or Figure 6 and Table 9, as applicable).
∕ of e .
The remaining wall thickness of the end of the pipe shall be at least 3 min
7.2.5 Wall thickness
The wall thickness, e, shall conform to Table 6, where a maximum wall thickness at any point up to
1,2 e is permitted provided that the mean wall thickness, e , is less than or equal to the specified
min m
e .
m,max
For DN 200 and greater intended for U application only, a reduction of e up to 5 % is permitted,
min
provided e is equal or exceeds the values of e given in Table 6. In such case, the ring stiffness shall
m min
be measured according to EN ISO 9969 and shall be greater than or equal to the nominal value.
For the calculation of the pipe stiffness the values of e as given in Table 6 should be used.
min
Table 6 — Wall thicknesses
Dimensions in millimetres
Nominal SN 2 SN 4 SN 8 SN 16
size
a
SDR 51 SDR 41 SDR 34 SDR 27,6
DN/OD e e e e e e e e
min m,max min m,max min m,max min m,max
b
110 — — 3,2 3,8 3,2 3,8 4,0 4,6
b
125 — — 3,2 3,8 3,7 4,3 4,6 5,3
160 3,2 3,8 4,0 4,6 4,7 5,4 5,8 6,6
200 3,9 4,5 4,9 5,6 5,9 6,7 7,3 8,3

250 4,9 5,6 6,2 7,1 7,3 8,3 9,1 10,3
315 6,2 7,1 7,7 8,7 9,2 10,4 11,4 12,8
355 7,0 7,9 8,7 9,8 10,4 11,7 12,9 14,4
400 7,9 8,9 9,8 11,0 11,7 13,1 14,5 16,2

450 8,8 9,9 11,0 12,3 13,2 14,8 16,3 18,2
500 9,8 11,0 12,3 13,8 14,6 16,3 18,1 20,2
630 12,3 13,8 15,4 17,2 18,4 20,5 22,8 25,3
710 13,9 15,5 17,4 19,4 20,8 23,2 25,7 28,5

800 15,7 17,5 19,6 21,8 23,4 27,0 29,0 32,1
900 17,6 19,6 22,0 24,4 26,3 30,3 32,6 36,1
1 000 19,6 21,8 24,5 27,2 29,2 33,6 36,2 40,1
NOTE The tolerances for wall thickness conform to ISO 11922-1 [4], Grade W.
a
SDR 51 is applicable for application area code "U" only.
b
These values are based on experience.
7.3 Dimensions of fittings
7.3.1 Outside diameters
The mean outside diameter, d , of the spigot shall conform to Table 5.
em
The out-of-roundness shall conform to the requirements given in 7.2.2.
7.3.2 Design lengths (Z)
The Z-length(s) of fittings (see Figures 7 to 10 and Figures 12 to 17) shall be given by the
manufacturer.
NOTE The Z-lengths are intended to assist in the design of moulds and are not intended to be used for
quality control purposes. ISO 265-1 [5] can be used as a guideline.
7.3.3 Wall thicknesses
Minimum wall thickness, e , of the body or the spigot of a fitting shall conform to Table 6, except
min
that a reduction of 5 % resulting from core shifting is permitted. In such a case, the average of two
opposite wall thicknesses shall be equal to or exceed the values given in Table 6.
Where a fitting or adaptor provides for a transition between two nominal sizes, the wall thickness of
each connecting part shall conform to the requirements for the applicable nominal size. In such a
case, the wall thickness of the fitting body is permitted to change gradually from the one wall
thickness to the other.
Wall thickness of the cover of the saddle branch (see Figure 17) shall be equal or greater than e of
min
the applicable size and series (see Table 6) of the inlet.
Wall thickness of fabricated fittings, except for spigot and socket, may be changed locally by the
fabrication process, providing that the minimum wall thickness of the body conforms to e , as
3,min
given in Table 8, as appropriate for the SDR concerned.
7.4 Dimensions of sockets and spigots
7.4.1 Elastomeric ring seal sockets and spigots
7.4.1.1 Diameters and lengths
The diameters and lengths of elastomeric ring seal sockets and spigots shall conform to Table 7 (see
Figures 2, 3 or 4, as applicable).
Where sealing rings are firmly retained, the dimensions for the minimum value for A and the
maximum value for C shall be measured to the effective sealing point (see Figure 4) as specified by
the manufacturer. This point shall give a full sealing action.
Different designs of elastomeric ring seal sockets and spigots are permitted, provided the joints
conform to the requirements given in Table 16.
Table 7 — Diameters and lengths of elastomeric ring seal sockets and spigots
Dimensions in millimetres
Nominal size Socket Spigot
a b a c
DN/OD d A C L H M
sm,min min max 1,min min
110 110,4 32 26 60 6 36
125 125,4 35 26 67 6 36
160 160,5 42 32 81 7 42
200 200,6 50 40 99 9 50
250 250,8 55 70 125 9 80
315 316,0 62 70 132 12 80
355 356,1 66 70 136 13 80
400 401,2 70 80 150 15 90
450 451,4 75 80 155 17 90
500 501,5 80 80 160 18 90
630 631,9 93 95 188 23 105
710 712,1 101 109 210 28 119
800 802,4 110 110 220 32 120
900 902,7 120 125 245 36 135
1 000 1 003,0 130 140 270 41 150
a
Higher values for C are allowed, provided the manufacturer states in his documentation the
actual required L1,min according to the formula L1,min = Amin + C and the actual required Mmin for
plugs according to the formula Mmin = C + 10.
b
Approximate values, when a 15 ° chamfer is applied.
c
Spigot length for plugs.
Key
A length of engagement e2 wall thickness of a socket
C depth of sealing zone e3 wall thickness at the groove
de outside diameter H length of chamfer
d inside diameter of a socket L length of a spigot
s 1
e wall thickness
Figure 2 — General dimensions of sockets and spigots for elastomeric sealing joints

Figure 3 — Typical groove designs for elastomeric ring seal sockets

Figure 4 — Example for measuring the effective sealing point
7.4.1.2 Wall thicknesses of sockets
The wall thicknesses of sockets, e and e (see Figure 2), except the socket mouth, shall conform to
2 3
Table 8.
A reduction of 5 % of e and e resulting from core shifting is permitted.
2 3
In such a case, the average of two opposite wall thicknesses shall be equal to or exceed the values
given in Table 8.
Where a sealing ring is located by means of a retaining cap or ring (see Figure 5), the wall thickness
in this area shall be calculated by addition of the wall thickness of the socket and the wall thickness
of the retaining cap or ring at the corresponding places
...