Plastics piping systems for water supply and for buried and above ground drainage, sewerage and irrigation under pressure - Oriented unplasticized poly(vinyl chloride) (PVC-O) - Part 2: Pipes

This part of FprEN 17176 specifies the characteristics of solid-wall pipes made of oriented unplasticized poly(vinyl chloride) (PVC-O) for piping systems intended for water supply and for buried drainage, sewerage, treated waste water and irrigation under pressure or above-ground where protected from direct sunlight. It also specifies the test parameters for the test methods referred to in this document.
In conjunction with FprEN 17176-1 and FprEN 17176-5, it is applicable to oriented PVC-O pipes with or without integral socket intended to be used for the following:
a)   water mains and services lines;
b)   conveyance of water for both outside and inside buildings;
c)   drainage, sewerage and treated waste water under pressure;
d)   irrigation under pressure.
It is applicable to piping systems intended for the supply of water with a maximum allowable operating pressure (PFA) up to and including 25 bar  . The piping system according to this document is intended for the conveyance of cold water up to and including 45 °C and especially in those applications where special performance requirements are needed, such as impact loads and pressure fluctuations.
For temperatures between 25 °C and 45 °C, Figure C.1 of this document applies.
This part of FprEN 17176 specifies a range of pipe sizes and pressure classes and gives a requirement and 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.

Kunststoff-Rohrleitungssysteme für die Wasserversorgung und für erdverlegte und nicht erdverlegte Entwässerungs-, Abwasser- und Bewässerungsdruckleitungen - Orientiertes weichmacherfreies Polyvinylchlorid (PVC-O) - Teil 2: Rohre - Änderung 1

Dieser Teil von EN 17176 legt die Eigenschaften von vollwandigen Rohren aus orientiertem weichmacherfreiem Polyvinylchlorid (PVC O) für Rohrleitungssysteme fest, die für die Wasserversorgung und für erdverlegte und nicht erdverlegte, vor direkter Sonneneinstrahlung geschützte Entwässerungs  und Abwasserdruckleitungen, Druckleitungen für behandeltes Abwasser und Bewässerungsdruckleitungen vorgesehen sind. In diesem Teil sind auch die Prüfparameter für die Prüfverfahren festgelegt, auf die in diesem Dokument verwiesen wird.
Zusammen mit EN 17176 1 und EN 17176 5 gilt er für orientierte PVC O Rohre mit oder ohne angeformte Muffe, die für folgende Anwendungsgebiete vorgesehen sind:
a)   Versorgungs- und Hausanschlussleitungen;
b)   Durchleitung von Wasser sowohl außerhalb als auch innerhalb von Gebäuden;
c)   Entwässerung, Abwasser und behandeltes Abwasser unter Druck;
d)   Bewässerung unter Druck.
Dieser Teil ist anwendbar auf Rohrleitungssysteme, die für die Versorgung mit Wasser mit einem maximal zulässigen Bauteilbetriebsdruck (PFA) bis einschließlich 25 bar  vorgesehen sind. Das Rohrleitungssystem nach diesem Dokument ist für die Durchleitung von Kaltwasser bis einschließlich 45 °C vorgesehen und besonders bei solchen Anwendungen, bei denen besondere Leistungsanforderungen gelten, wie z. B. Stoßbelastungen und Druckschwankungen.
Für Temperaturen zwischen 25 °C und 45 °C gilt Bild C.1 dieses Dokuments.
Dieser Teil von EN 17176 enthält Festlegungen für Rohrgrößen und Druckklassen sowie eine Anforderung und Empfehlungen an die Einfärbung.
ANMERKUNG   Der Käufer oder Auftraggeber ist unter Berücksichtigung der eigenen Anforderungen sowie der geltenden nationalen Bestimmungen und Verlegeverfahren oder -vorschriften für die entsprechende Auswahl dieser Eigenschaften verantwortlich.

Systèmes de canalisations en plastique pour l'alimentation en eau, les branchements et collecteurs d'assainissement et les systèmes d'irrigation sous pression, enterrés ou aériens - Poly(chlorure de vinyle) non plastifié orienté (PVC-O) - Partie 2 : Tubes

Cevni sistemi iz polimernih materialov za oskrbo z vodo in za podzemne in nadzemne sisteme odvodnjavanja, kanalizacije ter namakanja pod tlakom - Orientiran nemehčan polivinilklorid (PVC-O) - 2. del: Cevi (vključno z dopolnilom A1)

General Information

Status
Published
Publication Date
14-Nov-2022
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
24-Oct-2022
Due Date
29-Dec-2022
Completion Date
15-Nov-2022

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SLOVENSKI STANDARD
SIST EN 17176-2:2019+A1:2022
01-december-2022
Cevni sistemi iz polimernih materialov za oskrbo z vodo in za podzemne in
nadzemne sisteme odvodnjavanja, kanalizacije ter namakanja pod tlakom -

Orientiran nemehčan polivinilklorid (PVC-O) - 2. del: Cevi (vključno z dopolnilom

A1)

Plastics piping systems for water supply and for buried and above ground drainage,

sewerage and irrigation under pressure - Oriented unplasticized poly(vinyl chloride)

(PVC-O) - Part 2: Pipes

Kunststoff-Rohrleitungssysteme für die Wasserversorgung und für erdverlegte und nicht

erdverlegte Entwässerungs-, Abwasser- und Bewässerungsdruckleitungen - Orientiertes

weichmacherfreies Polyvinylchlorid (PVC-O) - Teil 2: Rohre - Änderung 1

Systèmes de canalisations en plastique pour l'alimentation en eau, les branchements et

collecteurs d'assainissement et les systèmes d'irrigation sous pression, enterrés ou

aériens - Poly(chlorure de vinyle) non plastifié orienté (PVC-O) - Partie 2 : Tubes

Ta slovenski standard je istoveten z: EN 17176-2:2019+A1:2022
ICS:
23.040.20 Cevi iz polimernih materialov Plastics pipes
91.140.80 Drenažni sistemi Drainage systems
93.030 Zunanji sistemi za odpadno External sewage systems
vodo
SIST EN 17176-2:2019+A1:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 17176-2:2019+A1:2022
---------------------- Page: 2 ----------------------
SIST EN 17176-2:2019+A1:2022
EN 17176-2:2019+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2022
EUROPÄISCHE NORM
ICS 23.040.20 Supersedes EN 17176-2:2019
English Version
Plastics piping systems for water supply and for buried
and above ground drainage, sewerage and irrigation under
pressure - Oriented unplasticized poly(vinyl chloride)
(PVC-O) - Part 2: Pipes

Systèmes de canalisations en plastique pour Kunststoff-Rohrleitungssysteme für die

l'alimentation en eau, les branchements et collecteurs Wasserversorgung und für erdverlegte und nicht

d'assainissement et les systèmes d'irrigation sous erdverlegte Entwässerungs-, Abwasser- und

pression, enterrés ou aériens - Poly(chlorure de vinyle) Bewässerungsdruckleitungen - Orientiertes

non plastifié orienté (PVC-O) - Partie 2 : Tubes weichmacherfreies Polyvinylchlorid (PVC-O) - Teil 2:

Rohre - Änderung 1

This European Standard was approved by CEN on 14 January 2019 and includes Amendment 1 approved by CEN on 8 August

2022.

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

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17176-2:2019+A1:2022 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 17176-2:2019+A1:2022
EN 17176-2:2019+A1:2022 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 6

3 Terms and definitions ................................................................................................................................... 8

4 Symbols ............................................................................................................................................................... 8

5 Material ............................................................................................................................................................... 8

5.1 General ................................................................................................................................................................ 8

5.2 Density ................................................................................................................................................................ 8

5.3 MRS class ............................................................................................................................................................ 8

5.4 Orientation factor ........................................................................................................................................... 9

6 General characteristics ................................................................................................................................. 9

6.1 Appearance ........................................................................................................................................................ 9

6.2 Colour .................................................................................................................................................................. 9

6.3 Opacity ................................................................................................................................................................ 9

6.4 Classification of pipes .................................................................................................................................... 9

6.4.1 Classification ..................................................................................................................................................... 9

6.4.2 Calculation of wall thickness .................................................................................................................... 10

7 Geometrical characteristics ..................................................................................................................... 10

7.1 Measurement of dimensions .................................................................................................................... 10

7.2 Length of pipes .............................................................................................................................................. 10

7.3 Nominal outside diameters and wall thicknesses ............................................................................ 11

7.4 Pipes with integral sockets with elastomeric sealing ring type .................................................. 13

7.5 Pipe ends with integral sockets with solvent cement joints ........................................................ 14

7.6 Plain ends ........................................................................................................................................................ 14

8 Selection of pipes.......................................................................................................................................... 14

8.1 Selection of nominal pressure and pipe series S for water up to and including 25 °C ........ 14

8.2 Determination of the allowable operating pressure for water up to 45 °C ............................. 14

9 Mechanical characteristics ....................................................................................................................... 15

9.1 Resistance to hydrostatic pressure ....................................................................................................... 15

9.1.1 General ............................................................................................................................................................. 15

9.1.2 Pipes .................................................................................................................................................................. 17

9.1.3 Pipes with integral sockets ....................................................................................................................... 17

9.2 Impact strength ............................................................................................................................................. 17

9.3 Ring stiffness .................................................................................................................................................. 18

10 Physical characteristics ............................................................................................................................. 18

11 Sealing rings ................................................................................................................................................... 19

12 Adhesives ........................................................................................................................................................ 19

13 Marking ............................................................................................................................................................ 20

13.1 General ............................................................................................................................................................. 20

13.2 Minimum required marking .................................................................................................................... 20

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SIST EN 17176-2:2019+A1:2022
EN 17176-2:2019+A1:2022 (E)

13.3 Additional marking ...................................................................................................................................... 20

Annex A (normative) Establishment of the pipe material classification ............................................... 21

A.1 General ............................................................................................................................................................. 21

A.2 Determination of PVC-O pipe material classification ...................................................................... 21

A.2.1 Procedure ........................................................................................................................................................ 21

A.2.2 Classified feedstock material ................................................................................................................... 22

A.2.3 Not classified feedstock material ............................................................................................................ 22

Annex B (normative) Minimum depth of engagement of sockets ............................................................ 23

B.1 General ............................................................................................................................................................. 23

B.2 Calculation of depth of engagement ....................................................................................................... 23

Annex C (normative) Temperature derating factor ...................................................................................... 26

Annex D (informative) Calculation of negative pressure capability of pipes ...................................... 27

D.1 Negative pressure capability of pipes ................................................................................................... 27

Annex E (normative) Determination of axial and circumferential orientation factor ..................... 28

E.1 Principle ........................................................................................................................................................... 28

E.2 Method .............................................................................................................................................................. 28

E.3 Test parameters ............................................................................................................................................ 28

E.4 Test procedure .............................................................................................................................................. 28

E.5 Test report ...................................................................................................................................................... 29

Bibliography ................................................................................................................................................................. 30

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SIST EN 17176-2:2019+A1:2022
EN 17176-2:2019+A1:2022 (E)
European foreword

This document (EN 17176-2:2019+A1:2022) 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 April 2023 and conflicting national standards shall be

withdrawn at the latest by April 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 8 August 2022.
This document supersedes EN 17176-2:2019.

The start and finish of text introduced or altered by amendment is indicated in the text by tags !" .

The main amendments to EN 17176-2:2019 are as follows:
— Correct MRS classification;
— Amend text nominal length (7.2) and tolerance Table 2;

— Revision of Annex A, addition of alternative interpretation reference lines (A.2.2 and A.2.3);

— Including clause test method in Annex E;
— Mistakes corrected in Table E and Annex E.

EN 17176 consists of the following parts, under the general title Plastics piping systems for water supply

and for buried and above ground drainage, sewerage and irrigation under pressure — Oriented

unplasticized poly(vinyl chloride) (PVC-O):
— Part 1: General;
— Part 2: Pipes (this document);
— Part 3: Fittings (Technical Specification);
— Part 5: Fitness for purpose of the system;
— Part 7: Guidance for assessment of conformity (in preparation).
For valves, see EN ISO 1452-4 [3].
Guidance for installation is given in ISO/TR 4191 [4].

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, Former Yugoslav Republic of Macedonia, France,

Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,

Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and

the United Kingdom.
---------------------- Page: 6 ----------------------
SIST EN 17176-2:2019+A1:2022
EN 17176-2:2019+A1:2022 (E)
Introduction

The System Standard, of which this is Part 2, specifies the requirements for a piping system made from

oriented unplasticized poly(vinyl chloride) (PVC-O) pipes and its components. The piping system is

intended to be used for water supply, pressurized drainage, sewerage, treated waste water and irrigation

systems to be used underground or above ground where protected from direct sunlight.

In respect of potential adverse effects on the quality of water intended for human consumption, caused

by the products covered by this part of EN 17176, the following is relevant:

a) This part of EN 17176 provides no information as to whether or not the products can be used without

restriction.

b) Existing national regulations concerning the use and/or the characteristics of these products remain

in force.

Requirements and test methods for PVC-O components are specified in EN 17176-1 and

CEN/TS 17176-3. For other components (not manufactured from PVC-O) reference is made to the

following standards: EN ISO 1452-3 (PVC-U) [2] and EN 12842 (Cast Iron) [1]. Characteristics for fitness

for purpose (mainly for joints) are established in EN 17176-5.
This part of EN 17176 specifies the characteristics of PVC-O pipes.
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SIST EN 17176-2:2019+A1:2022
EN 17176-2:2019+A1:2022 (E)
1 Scope

This part of EN 17176 specifies the characteristics of solid-wall pipes made of oriented unplasticized

poly(vinyl chloride) (PVC-O) for piping systems intended for water supply and for buried drainage,

sewerage, treated waste water and irrigation under pressure or above-ground where protected from

direct sunlight. It also specifies the test parameters for the test methods referred to in this document.

In conjunction with EN 17176-1 and EN 17176-5, it is applicable to oriented PVC-O pipes with or without

integral socket intended to be used for the following:
a) water mains and services lines;
b) conveyance of water for both outside and inside buildings;
c) drainage, sewerage and treated waste water under pressure;
d) irrigation under pressure.

It is applicable to piping systems intended for the supply of water with a maximum allowable operating

pressure (PFA) up to and including 25 bar . The piping system according to this document is intended

for the conveyance of cold water up to and including 45 °C and especially in those applications where

special performance requirements are needed, such as impact loads and pressure fluctuations.

For temperatures between 25 °C and 45 °C, Figure C.1 of this document applies.

This part of EN 17176 specifies a range of pipe sizes and pressure classes and gives a requirement and

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 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 — Materials requirements for pipe joint seals used in water and drainage

applications — Part 1: Vulcanized rubber

EN 14814, Adhesives for thermoplastic piping systems for fluids under pressure - Specifications

EN 17176-1:2019, Plastics piping systems for water supply and for buried and above ground drainage,

sewerage and irrigation under pressure — Oriented unplasticized poly(vinyl chloride) (PVC-O) — Part 1:

General

EN 17176-5, Plastic piping systems for water supply and for buried and above ground drainage, sewerage

and irrigation under pressure — Oriented unplasticized poly(vinyl chloride) (PVC-O) — Part 5: Fitness for

purpose of the system
5 2
1) 1 bar = 0,1 MPa = 10 Pa; 1 MPa = 1 N/mm .
---------------------- Page: 8 ----------------------
SIST EN 17176-2:2019+A1:2022
EN 17176-2:2019+A1:2022 (E)

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 1452-2:2009, Plastics piping systems for water supply and for buried and above-ground drainage

and sewerage under pressure — Unplasticized poly(vinyl chloride) (PVC-U) — Part 2: Pipes (ISO 1452-

2:2009)

EN ISO 2505, Thermoplastics pipes — Longitudinal reversion — Test method and parameters (ISO 2505)

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 6259-1, Thermoplastics pipes — Determination of tensile properties — Part 1: General test method

(ISO 6259-1
EN ISO 7686, Plastics pipes and fittings — Determination of opacity (ISO 7686)

EN ISO 9080, Plastics piping and ducting systems — Determination of the long-term hydrostatic strength of

thermoplastics materials in pipe form by extrapolation (ISO 9080)

EN ISO 9311-1, Adhesives for thermoplastic piping systems — Part 1: Determination of film properties (ISO

9311-1)

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 12162, Thermoplastics materials for pipes and fittings for pressure applications — Classification,

designation and design coefficient (ISO 12162)
ISO 3, Preferred numbers — Series of preferred numbers

ISO 161-1, Thermoplastics pipes for the conveyance of fluids — Nominal outside diameters and nominal

pressures — Part 1: Metric series

ISO 2531, Ductile iron pipes, fittings, accessories and their joints for water applications

ISO 2507-1, Thermoplastics pipes and fittings — Vicat softening temperature — Part 1: General test

method
ISO 4065, Thermoplastics pipes — Universal wall thickness table

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)
---------------------- Page: 9 ----------------------
SIST EN 17176-2:2019+A1:2022
EN 17176-2:2019+A1:2022 (E)

ISO 7387-1, Adhesives with solvents for assembly of PVC-U pipe elements — Characterization — Part 1:

Basic test methods

ISO 11922-1:2018, Thermoplastics pipes for the conveyance of fluids — Dimensions and tolerances —

Part 1: Metric series

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 17176-1 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
4 Symbols
For the purposes of this document, the following symbols apply.
l is the length of socket (mm)
m is the depth of engagement (mm)

S is the calculated preferred value of the nominal S series number of the pipe from 6.4.2

β minimum angle chamfer
5 Material
5.1 General

The material from which the pipes are made shall conform to EN 17176-1 and to the requirements given

in 5.2 and 5.4.
5.2 Density

The density, ρ, at 23 °C of the pipe, when measured in accordance with EN ISO 1183-1, shall be within the

following limits:
3 3
1 350 kg/m < ρ < 1 460 kg/m
5.3 MRS class

Oriented pipes made from a defined PVC compound/formulation and with a well-defined orientation

level in circumferential and axial direction, shall be evaluated according to the procedures of Annex A.

The MRS value shall be classified in accordance with EN 17176-1.
The MRS class shall be declared by the manufacturer.
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SIST EN 17176-2:2019+A1:2022
EN 17176-2:2019+A1:2022 (E)
5.4 Orientation factor

The level of orientation, is an indirect parameter for the material classification of the pipes and is

depending of the production process.

The orientation factor, circumferential and axial shall be declared by the manufacturer and comply with

the minimum values as defined in Table 1.

The orientation factors shall be measured according to Annex E and specified by the manufacturer to be

within – 5 % and + 15 % deviation from the declared values.
Table1 — Minimum declared orientation factor
Minimum required
31,5 35,5 40,0 45,0 50,0
strength (MRS)-MPa
Axial 1,0
Circumferential 1,5 1,6 1,7 1,8 1,9
6 General characteristics
6.1 Appearance

When viewed without magnification the internal and external surfaces of pipes shall be smooth, clean

and free from scoring, cavities and other surface defects to an extent that would prevent conformity to

this part of EN 17176. The material shall not contain any impurities visible without magnification. The

ends of the pipe shall be cut cleanly and square to the axis of the pipe.
6.2 Colour
The colour of the pipes shall be uniform throughout the wall.
The preferred colour of pipes shall be as follows:
a) for water supply cream, blue, white or white with blue striping;
b) for irrigation under pressure blue or white;

c) for pressurized drainage and sewerage grey, brown or white with brown stripes;

d) for treated waste water purple.

NOTE Attention is drawn to the fact that the colouring of pipes for the supply of water for human consumption

can be part of national regulation.
6.3 Opacity

If a pipe is required to be opaque for use in above ground applications the wall of the pipe shall transmit

not more than 0,2 % of visible light falling on it when tested in accordance with EN ISO 7686.

6.4 Classification of pipes
6.4.1 Classification
Pipes shall be classified to their nominal pressure PN.
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SIST EN 17176-2:2019+A1:2022
EN 17176-2:2019+A1:2022 (E)

The nominal pressure PN, the pipe series S and the design stress, σ , are connected by the following

relationship:
10σ
PN≅ (1)
SDR− 1
S= (2)
SDR= (3)
MRS
(4)
σ =
6.4.2 Calculation of wall thickness

The relationship between the nominal wall thickness e and the nominal outside diameter d is specified

n n

in ISO 4065. The values for nominal pipe wall thickness e for nominal pressure ratings PN, can be

calculated by substituting the values for MRS, C, and d in the formula:
e = (5)
21S +
Values shall be rounded to one decimal place according to the rules of ISO 4065.

Nominal S numbers and their calculated values are given in ISO 4065 for the R10 series of preferred

numbers. For the R20 series required for this European Standard, refer to ISO 3.

The nominal outside diameter and nominal wall thickness for the relevant nominal pressure and material

classes are specified in Table 3.
7 Geometrical characteristics
7.1 Measurement of dimensions
Dimensions shall be measured in accordance with EN ISO 3126.
7.2 Length of pipes

!The nominal pipe length, l, shall be a minimum length which does not include the depth of the socketed

portions, as shown in Figure 1.

It is recommended to supply pipes in one or more of the following lengths: 3 m, 5 m, 6 m, 10 m or 12 m.

NOTE Other lengths are subject to agreement between the manufacturer and the purchaser.

The tolerance on the nominal pipe length is specified in Table 2.
Table 2 — Tolerance on nominal pipe length
Nominal pipe length Tolerance on length
≥ Manufacturer +0,05 m
declared value
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SIST EN 17176-2:2019+A1:2022
EN 17176-2:2019+A1:2022 (E)
Figure 1 — Points of measurement for nominal pipe lengths"
7.3 Nominal outside diameters and wall thicknesses

The nominal outside diameter of pipes in accordance with ISO 161-1, and the corresponding wall

thickness shall be selected from Table 3 as appropriate for size, nominal pressure and pipe material class.

The tolerances on mean outside diameters shall be in accordance with ISO 11922-1:2018, grade C. For

other outside diameters not mentioned in ISO 11922-1, the tolerance shall be calculated according to

0,003d rounded to the nearest 0,1 mm with a minimum value of 0,3 mm.

The nominal wall thickness shall comply with the minimum values given in Table 3.

The mean wall thickness shall be declared by the manufacturer.

The tolerances on the mean wall thickness shall be in accordance with ISO 11922-1:2018, grade W,

otherwise they shall be specified by the ma
...

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