Bsi bs en 13244 2 2002 (2003)

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BRITISH STANDARD

Plastics piping systems
for buried and
above-ground pressure
systems for water for
general purposes,
drainage and
sewerage —
Polyethylene (PE) —
Part 2: Pipes

The European Standard EN 13244-2:2002 has the status of a
British Standard

ICS 23.040.20; 93.030

12&23<,1*:,7+287%6,3(50,66,21(;&(37$63(50,77('%<&23<5,*+7/$:

BS EN
13244-2:2002


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BS EN 13244-2:2002

National foreword
This British Standard is the official English language version of
EN 13244-2:2002. Collectively, EN 13244-1, EN 13244-2 and EN 13244-5
supersede:
— BS 6437:1984, Specification for polyethylene pipes (type 50) in metric
diameters for general purposes;
which will be declared obsolescent by December 2004.
NOTE 1 The UK water industry has indicated that following the publication of this British
Standard, the following Water Industry Specification will be declared obsolescent by March 2005
and retained for reference where applicable:
— WIS 4-32-17 (Issue 2), Specification for polyethylene pressure pipes for pressurised water
supply and sewerage duties1).

The UK participation in its preparation was entrusted by Technical Committee
PRI/88 (previously PRI/61), Plastics piping systems, to Subcommittee PRI/88/2
(previously PRI/61/2), Plastics piping systems for pressure applications, which
has the responsibility to:
—

aid enquirers to understand the text;

—

present to the responsible international/European committee any
enquiries on the interpretation, or proposals for change, and keep the
UK interests informed;

—

monitor related international and European developments and

promulgate them in the UK.

A list of organizations represented on this subcommittee can be obtained on
request to its secretary.
NOTE 2 It was decided not to proceed with the publication of prEN 13244-6, Recommended
practice for installation and that existing national practices would be applicable. In the UK, in the
absence of a British Standard covering installation, it is the opinion of Technical Committee
PRI/88, Plastics piping systems, that reference to the Polyethylene Pipe Systems Manual2), a joint
publication of WRc and BPF Plastic Pipes Group represents established UK practice.
NOTE 3 Part 7 has been prepared as a CEN/TS, to allow further development. CEN/TS 13244-7
is not mandatory under the Public Procurement Directive.

Attention is drawn to the following statutory regulations:
Health and Safety at Work etc. Act 1974 and subsequent regulations.
Attention is also drawn to any appropriate safety precautions. It is assumed in
the drafting of a standard that the execution of its provisions is entrusted to
appropriately qualified people.

Published by WRc, Swindon.
WRc/BPF PLASTIC PIPES GROUP. Polyethylene Pipe Systems Manual.
Swindon: WRc, 2002.
1)
2)

This British Standard, was
published under the authority
of the Standards Policy and
Strategy Committee on
11 December 2003

© BSI 11 December 2003

ISBN 0 580 43027 8

Amendments issued since publication
Amd. No.

Date

Comments


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BS EN 13244-2:2002
The UK National annex NA attached to this standard provides additional
information on the selection and installation of piping systems and components
in the UK.
Cross-references
The British Standards which implement international or European publications
referred to in this document may be found in the BSI Catalogue under the section
entitled “International Standards Correspondence Index”, or by using the
“Search” facility of the BSI Electronic Catalogue or of British Standards Online.
This publication does not purport to include all the necessary provisions of a
contract. Users are responsible for its correct application.
Compliance with a British Standard does not of itself confer immunity
from legal obligations.

Summary of pages
This document comprises a front cover, an inside front cover, pages i and ii,

the EN title page, pages 2 to 21 and a back cover.
The BSI copyright notice displayed in this document indicates when the
document was last issued.

© BSI 11 December 2003

i


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ii

blank


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EUROPEAN STANDARD

EN 13244-2

NORME EUROPÉENNE
EUROPÄISCHE NORM

December 2002

ICS 23.040.20; 93.030

English version

Plastics piping systems for buried and above-ground pressure
systems for water for general purposes, drainage and sewerage
- Polyethylene (PE) - Part 2: Pipes
Systèmes de canalisations en plastique pour les
applications générales de transport d'eau, de branchement
et de collecteurs d'assainissement, enterrés sous pression
- Polyéthylène (PE) - Partie 2: Tubes

Kunstoff-Rohrleitungssysteme für erd- und oberirdisch
verlegte Druckrohrleitungen für Brauchwasser,
Entwässerung und Abwasser - Polyethylen (PE) - Teil 2:
Rohre

This European Standard was approved by CEN on 23 October 2002.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: rue de Stassart, 36

© 2002 CEN

All rights of exploitation in any form and by any means reserved
worldwide for CEN national Members.

B-1050 Brussels

Ref. No. EN 13244-2:2002 E


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EN 13244-2:2002 (E)

Contents
page

Foreword......................................................................................................................................................................3
Introduction .................................................................................................................................................................5
1

Scope ..............................................................................................................................................................6

2

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

3

Definitions, symbols and abbreviations......................................................................................................7

4
4.1
4.2

Material............................................................................................................................................................7
Compound ......................................................................................................................................................7
Identification compound ...............................................................................................................................7

5
5.1
5.2

General characteristics .................................................................................................................................7
Appearance.....................................................................................................................................................7
Colour..............................................................................................................................................................7

6
6.1
6.2
6.3
6.4
6.5
6.6

Geometrical characteristics..........................................................................................................................8

Measurement of dimensions ........................................................................................................................8
Mean outside diameters and out-of-roundness (ovality)...........................................................................8
Wall thicknesses and their tolerances.........................................................................................................9
Coiled pipe....................................................................................................................................................12
Pipe lengths..................................................................................................................................................12
Pipe stiffness................................................................................................................................................12

7
7.1
7.2
7.3

Mechanical characteristics .........................................................................................................................12
Conditioning .................................................................................................................................................12
Requirements ...............................................................................................................................................12
Retest in case of failure at 80 °C ................................................................................................................13

8
8.1
8.2

Physical characteristics ..............................................................................................................................14
Conditioning .................................................................................................................................................14
Requirements ...............................................................................................................................................14

9

Chemical characteristics of pipes in contact with chemicals.................................................................15

10

Performance requirements .........................................................................................................................15

11
11.1
11.2

Marking .........................................................................................................................................................15
General..........................................................................................................................................................15
Minimum required marking of pipes ..........................................................................................................16

Annex A (informative) Relationship between PN, MRS, S and SDR....................................................................17
Annex B (normative) Pipe stiffness.........................................................................................................................18
Bibliography ..............................................................................................................................................................19

2


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EN 13244-2:2002 (E)

Foreword
This document (EN 13244-2:2002) 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 June 2003, and conflicting national standards shall be withdrawn at the latest by
December 2004.
For components which have conformed to the relevant national standard before December 2002, as shown by the
manufacturer or by a certification body, the national standard may continue to be applied until December 2004.

It has been prepared in liaison with CEN/TC 165 "Waste water engineering".
This European Standard 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 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 standards on general functional requirements and standards on
recommended practices for installation.
EN 13244 consists of the following Parts, under the general title Plastics piping systems for buried and aboveground pressure systems for water for general purposes, drainage and sewerage — Polyethylene (PE):
— Part 1: General
— Part 2: Pipes (this standard)
— Part 3: Fittings
— Part 4: Valves
— Part 5: Fitness for purpose of the system
— Part 7: Guidance for the assessment of conformity (to be published as a CEN/TS)
NOTE
It was decided not to publish a Part 6: Recommended practice for installation. Instead, existing national practices
would be applicable.

This Part of EN 13244 includes the following:
— Annex A (informative): Relationship between PN, MRS, S and SDR
— Annex B (normative): Pipe stiffness
— Bibliography
System Standards for piping systems of other plastics materials used for the conveyance of water, drainage and
sewerage under pressure include the following:
prEN 14364, Plastics piping systems for pressure and non-pressure drainage and sewerage — Glass-reinforced
thermosetting (GRP) plastics based on polyester resin (UP).
3

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EN 13244-2:2002 (E)

EN 1456, Plastics piping systems for buried and above-ground drainage and sewerage under pressure —
Unplasticized poly(vinyl chloride) (PVC-U).
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain,
Sweden, Switzerland and the United Kingdom.

4


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EN 13244-2:2002 (E)

Introduction
EN 13244, of which this is Part 2, specifies the requirements for a piping system and its components when made
from polyethylene (PE), intended to be used for buried and above-ground pressure systems for water for general
purposes, drainage and sewerage, including vacuum systems.
Requirements and test methods for material and components, other than pipes, are specified in EN 13244-1, EN
13244-3 and EN 13244-4. Characteristics for fitness for purpose are covered in EN 13244-5 and prCEN/TS 132447 gives guidance for the assessment of conformity.
This Part of EN 13244 covers the characteristics of pipes.

5


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EN 13244-2:2002 (E)

1

Scope

This Part of EN 13244 specifies the characteristics of pipes made from polyethylene (PE) intended for buried and
above-ground pressure systems for water for general purposes, drainage and sewerage. It is also applicable for
vacuum sewer systems.
NOTE 1
Water for general purposes is not intended for human consumption and components conforming to this standard
should not be used in systems conveying water for human consumption. For PE components intended for the conveyance of
water intended for human consumption and raw water prior to treatment, see EN 12201.

It also specifies the test parameters for the test methods referred to in this standard.
In conjunction with other Parts of EN 13244 (see Foreword), it is applicable to PE pipes, their joints and to joints
with components of PE and other materials intended to be used as follows:


buried in the ground;



sea outfalls;



laid in water;



above-ground, including pipes suspended below bridges;



a maximum operating pressure, MOP, up to and including 25 bar 1 ;



an operating temperature of 20 °C as a reference temperature.

)

NOTE 2
1:2002.

For applications operating at constant temperatures greater than 20 °C and up to 40 °C, see annex A of EN 13244-

EN 13244 covers a range of maximum operating pressures and gives requirements concerning colours and
additives.
NOTE 3
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 guidance or regulations and installation practices or codes.

NOTE 4
Assessment of the resistance to slow crack growth of the PE pipe compound used for the manufacture of products
to this specification is required in accordance with Table 2 of EN 13244-1:2002.

2

Normative references

This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 728, Plastics piping and ducting systems — Polyolefin pipes and fittings — Determination of oxidation
induction time.
EN 921:1994, Plastics piping systems — Thermoplastics pipes — Determination of resistance to internal pressure
at constant temperature.
EN 13244-1:2002, Plastics piping systems for buried and above-ground pressure systems for water for general
purposes, drainage and sewerage — Polyethylene (PE) — Part 1: General.

5

2

1) 1 bar = 10 N/m .

6


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EN 13244-2:2002 (E)

EN 13244-5:2002, Plastics piping systems for buried and above-ground pressure systems for water for general
purposes, drainage and sewerage — Polyethylene (PE) — Part 5: Fitness for purpose of the system.
EN ISO 1133:1999, Plastics — Determination of the melt-mass flow rate (MFR) and the melt-volume flow rate
(MVR) of thermoplastics (ISO 1133:1997).
prEN ISO 3126:1999, Plastics piping systems — Plastics piping components — Measurement and determination
of dimensions (revision of prEN 496:1991 and ISO 3126:1974) (ISO/DIS 3126:1999).
EN ISO 6259-1:2001, Thermoplastics pipes — Determination of tensile properties — Part 1: General test method
(ISO 6259-1:1997).
ISO 4433-1:1997, Thermoplastics pipes — Resistance to liquid chemicals — Classification — Part 1: Immersion
test method.
ISO 4433-2:1997, Thermoplastics pipes — Resistance to liquid chemicals — Classification — Part 2: Polyolefin
pipes.
ISO 6259-3:1997, Thermoplastics pipes — Determination of tensile properties — Part 3: Polyolefin pipes.

3

Definitions, symbols and abbreviations

For the purposes of this European Standard the terms, definitions, symbols and abbreviations given in
EN 13244-1 apply.

4
4.1

Material
Compound

The material from which the pipes are made shall conform to EN 13244-1.

4.2

Identification compound

Where applicable, the compound used for identification stripes (see 5.2) shall be made from a PE polymer
manufactured from the same type of base polymer as used in the compound for pipe production.

5
5.1

General characteristics
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 of the pipe to this standard.
The pipe ends shall be cut cleanly and square to the axis of the pipe.

5.2

Colour

The pipes shall be black or black with brown stripes unless other colours or forms of identification are specified by
national regulations.
NOTE 1
Where national regulations require an alternative colour to black, pipes coloured blue or black with blue stripes
should not be used for this application. The blue colour indicates that the components are suitable for the conveyance of water
intended for human consumption as specified in EN 12201[1].
NOTE 2

For above ground installations non-black pipes should be protected from direct UV light.

7


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EN 13244-2:2002 (E)

6

Geometrical characteristics

6.1

Measurement of dimensions

The dimensions of the pipe shall be measured in accordance with prEN ISO 3126. In the case of dispute the
measurements of dimensions shall be made not less than 24 h after manufacture after being conditioned for at
least 4 h at (23 ± 2) °C.

6.2

Mean outside diameters and out-of-roundness (ovality)

The mean outside diameter, dem, and the out-of-roundness (ovality) of the pipe shall be in accordance with
Table 1.

Table 1 — Mean outside diameters and out-of-roundness
Dimensions in millimetres

Nominal size
DN/OD

Nominal outside
diameter

dn
32
40
50
63
75
90
110
125
140
160
180
200
225
250
280
315
355
400
450
500

560
630
710
800
900
1000
1200
1400
1600

32
40
50
63
75
90
110
125
140
160
180
200
225
250
280
315
355
400
450
500

560
630
710
800
900
1000
1200
1400
1600

Mean outside diameter a

dem,min
32,0
40,0
50,0
63,0
75,0
90,0
110,0
125,0
140,0
160,0
180,0
200,0
225,0
250,0
280,0
315,0
355,0

400,0
450,0
500,0
560,0
630,0
710,0
800,0
900,0
1000,0
1200,0
1400,0
1600,0

dem,max
32,3
40,4
50,4
63,4
75,5
90,6
110,7
125,8
140,9
161,0
181,1
201,2
226,4
251,5
281,7
316,9

357,2
402,4
452,7
503,0
563,4
633,8
716,4
807,2
908,1
1009,0
1210,8 *)
1412,6 *)
1614,4 *)

Maximum out-ofroundness
(ovality)b
1,3
1,4
1,4
1,5
1,6
1,8
2,2
2,5
2,8
3,2
3,6
4,0
4,5
5,0

9,8
11,1
12,5
14,0
15,6
17,5
19,6
22,1
-

In accordance with ISO 11922-1[2] grade B for sizes ≤ 630 and grade A for sizes ≥ 710.
In accordance with ISO 11922-1[2] grade N for sizes ≤ 630 and is measured at the point of manufacture.
*) Tolerance calculated as 0,009 dem and does not conform to grade A of ISO 11922-1[2].

a
b

For coiled pipe and straight lengths with diameters ≥ 710 mm the maximum out-of-roundness shall be agreed
between the manufacturer and the purchaser.

NOTE

8

Tolerance bands in accordance with ISO 11922-1[2] are calculated using following formulae, as applicable:


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EN 13244-2:2002 (E)

a)

Grade A: 0,009dn rounded to the next greater 0,1 mm with a minimum value of 0,3 mm and a maximum value of 10,0 mm;

b)

Grade B: 0,006dn rounded up to the next greater 0,1 mm with a minimum value of 0,3 mm and a maximum value of
4,0 mm;

c)

for diameters ≤ 75 mm:
[0,008dn + 1] mm;
for diameters ≥ 90 mm and ≤ 250 mm:
[0,02dn] mm;
for diameters > 250 mm:
[0,035dn] mm,
rounded to next greater 0,1 mm.

Grade N:

6.3

Wall thicknesses and their tolerances

The wall thickness e shall be in accordance with Table 2.
NOTE

The relationship between PN, MRS, S and SDR are given in Table A.1.

9


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EN 13244-2:2002 (E)

Table 2 — Wall thicknesses
Pipe series
SDR 6
S 2,5

SDR 7,4
S 3,2

SDR 9
S4

SDR 11
S5

SDR 13,6
S 6,3

SDR 17
S8

Nominal pressure, PN a
PE 63

--

--

--

PN 10

PN 8

-

PE 80

PN 25

PN 20

PN 16

PN 12,5

PN 10

PN 8

PE 100

--

PN 25

PN 20

PN 16

PN 12,5

PN 10

Nom.
size
DN/OD

Wall thicknesses

emin

emax

emin

emax

emin

emax

emin

32
40
50
63
75

5,4
6,7
8,3
10,5
12,5

6,1
7,5
9,3
11,7
13,9

4,4
5,5
6,9
8,6
10,3

5,0
6,2
7,7

9,6
11,5

3,6
4,5
5,6
7,1
8,4

4,1
5,1
6,3
8,0
9,4

3,0
3,7
4,6
5,8
6,8

90
110
125
140

15,0
18,3
20,8
23,3

16,7
20,3
23,0
25,8

12,3
15,1
17,1
19,2

13,7
16,8
19,0
21,3

10,1
12,3
14,0
15,7

11,3
13,7
15,6
17,4

160
180
200
225

26,6
29,9
33,2
37,4

29,4
33,0
36,7
41,3

21,9
24,6
27,4
30,8

24,2
27,2
30,3
34,0

17,9
20,1
22,4
25,2

250
280
315
355

41,5
46,5
52,3
59,0

45,8
51,3
57,7
65,0

34,2
38,3
43,1
48,5

37,8
42,3
47,6
53,5

400
450
500
560

-

-

54,7
61,5
-

60,3
67,8
-

630
710
800
900

-

-

-

-

1000
1200
1400
1600

-

-

-

-

a

c

b

emax

emin

emax

emax

emin
c

3,4
4,2
5,2
6,5
7,6

2,4
3,0
3,7

4,7
5,6

2,8
3,5
4,2
5,3
6,3

2,0
2,4
3,0
3,8
4,5

2,3
2,8
3,4
4,3
5,1

8,2
10,0
11,4
12,7

9,2
11,1
12,7
14,1

6,7
8,1
9,2
10,3

7,5
9,1
10,3
11,5

5,4
6,6
7,4
8,3

6,1
7,4
8,3
9,3

19,8
22,3
24,8
27,9

14,6
16,4
18,2
20,5

16,2
18,2
20,2
22,7

11,8
13,3
14,7
16,6

13,1
14,8
16,3
18,4

9,5
10,7
11,9
13,4

10,6
11,9
13,2
14,9

27,9
31,3
35,2
39,7

30,8
34,6
38,9
43,8

22,7
25,4
28,6
32,2

25,1
28,1
31,6
35,6

18,4
20,6
23,2
26,1

20,4
22,8
25,7
28,9

14,8
16,6
18,7
21,1

16,4
18,4
20,7
23,4

44,7
50,3
55,8
-

49,3
55,5
61,5
-

36,3
40,9
45,4
50,8

40,1
45,1
50,1
56,0

29,4
33,1
36,8
41,2

32,5
36,6
40,6
45,5

23,7
26,7
29,7
33,2

26,2
29,5
32,8
36,7

-

-

57,2
-

63,1
-

46,3
52,2
58,8
-

51,1
57,6
64,8
-

37,4
42,1
47,4
53,3

41,3
46,5
52,3
58,8

-

-

-

-

-

-

59,3
-

65,4
-

PN values are based on C = 1,25.
[2]
Tolerances in accordance with grade V of ISO 11922-1 .
c
[3]
The calculated value of emin (see ISO 4065 ) is rounded up to the nearest value of either 2,0, or 3,0. This is to
satisfy certain national requirements.
b

10


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EN 13244-2:2002 (E)

Table 2 — Wall thicknesses (concluded)
Dimensions in millimetres

Pipe series
SDR 17,6
S 8,3

SDR 21
S 10

SDR 26
S 12,5

SDR 33
S 16

SDR 41
S 20

PN 4

PN 3,2

PN 2,5

PN 5

PN 4

PN 3,2

PN 5

PN 4

Nominal pressure, PN a
PE 63:

PN 6

PE 80:

-

PE 100:

-

Nom.
size
DN/OD

PN 5
PN 6

c

PN 8

PN 6

c

Wall thicknesses b

emin
d

emax

emin

emax

emin

emax

emin

emax

emin

emax

2,3
2,7
3,3
4,1
4,9

d
2,0
2,4
3,0
3,6

2,3
2,8

3,4
4,1

2,0
2,5
2,9

2,3
2,9
3,3

-

-

-

-

,

32
40
50
63
75

2,0
2,3
2,9

3,6
4,3

90
110
125
140

5,1
6,3
7,1
8,0

5,8
7,1
8,0
9,0

4,3
5,3
6,0
6,7

4,9
6,0
6,7
7,5

3,5
4,2

4,8
5,4

4,0
4,8
5,4
6,1

-

-

-

-

160
180
200
225

9,1
10,2
11,4
12,8

10,2
11,4
12,7
14,2

7,7
8,6
9,6
10,8

8,6
9,6
10,7
12,0

6,2
6,9
7,7
8,6

7,0
7,7
8,6
9,6

-

-

-

-

250

280
315
355

14,2
15,9
17,9
20,1

15,8
17,6
19,8
22,3

11,9
13,4
15,0
16,9

13,2
14,9
16,6
18,7

9,6
10,7
12,1
13,6

10,7

11,9
13,5
15,1

9,7
10,9

10,8
12,1

7,7
8,7

8,6
9,7

400
450
500
560

22,7
25,5
28,3
31,7

25,1
28,2
31,3
35,0

19,1
21,5
23,9
26,7

21,2
23,8
26,4
29,5

15,3
17,2
19,1
21,4

17,0
19,1
21,2
23,7

12,3
13,8
15,3
17,2

13,7
15,3
17,0
19,1

9,8
11,0
12,3
13,7

10,9
12,2
13,7
15,2

630
710
800
900

35,7
40,2
45,3
51,0

39,4
44,4
50,0
56,2

30,0
33,9
38,1
42,9

33,1
37,4
42,1
47,3

24,1
27,2
30,6
34,4

26,7
30,1
33,8
38,3

19,3
21,8
24,5
27,6

21,4
24,1
27,1
30,5

15,4
17,4
19,6
22,0

17,1
19,3
21,7
24,3

1000
1200
1400
1600

56,6
-

62,4
-

47,7
57,2
-

52,6
63,1
-

38,2
45,9
53,5
61,2

42,2
50,6
59,0
67,5

30,6
36,7
42,9
49,0

33,8
40,5
47,3
54,0

24,5
29,4
34,3
39,2

27,1
32,5
37,9
43,3

a

PN values are based on C = 1,25.
Tolerances in accordance with grade V of ISO 11922-1[2].
c

Actual calculated values are PE 100 6,4 bar and PE 80 6,3 bar.
d
The calculated value of emin (see ISO 4065[3]) is rounded up to the nearest value of either 2,0, or 3,0.
This is to satisfy certain national requirements.
b

NOTE

Grade V tolerances are in accordance with ISO 11922-1[2] and calculated from the following formula:
(0,1 emin + 0,1 mm), rounded up to the next 0,1 mm higher.

11


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EN 13244-2:2002 (E)

For certain applications for e > 30 mm tolerance grade T in accordance with ISO 11922-1[2] can be used and the
tolerance calculated from the following formula: 0,15emin, rounded to next higher 0,1 mm.

6.4

Coiled pipe

The pipe shall be coiled such that localised deformation, e.g. buckling and kinking, is prevented.
The minimum internal diameter of the coil shall be not less than 18dn.

6.5

Pipe lengths

No requirements have been set concerning particular lengths of coiled or straight pipe or the tolerance thereon;
hence it is necessary for lengths of pipe to be supplied by agreement between purchaser and manufacturer.

6.6

Pipe stiffness

Pipes for use in vacuum sewer systems shall have an initial ring stiffness Scalc ≥ 4. See annex B.

7
7.1

Mechanical characteristics
Conditioning

Unless otherwise specified by the applicable test method, the test pieces shall be conditioned at (23 ± 2) °C before
testing in accordance with Table 3.

7.2

Requirements

When tested in accordance with the test method as specified in Table 3 using the indicated parameters, the pipe
shall have mechanical characteristics conforming to the requirements given in Table 3.

12

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EN 13244-2:2002 (E)

Table 3 — Mechanical characteristics
Characteristics
Hydrostatic
strength at 20 °C

Requirements
No failure during
test period of any
test pieces

Test parameters
End caps
Conditioning period
Number of test pieces b
Type of test
Test temperature
Test period
Circumferential (hoop) stress
for: PE 63
PE 80
PE 100

Hydrostatic
strength at 80 °C

No failure during
test period of any
test pieces

End caps
Conditioning period
Number of test pieces b
Type of test
Test temperature
Test period
Circumferential (hoop) stress
for: PE 63
PE 80
PE 100

Hydrostatic
strength at 80 °C

No failure during
test period of any
test pieces

End caps
Conditioning period
Number of test pieces b
Type of test
Test temperature
Test period
Circumferential (hoop) stress

for:
PE 63
PE 80
PE 100

Type a) a

Test method
EN 921:1994

Shall conform to
EN 921:1994
3
Water-in-water
20 °C
100 h
8,0 MPa
10,0 MPa
12,4 MPa
Type a) a
Shall conform to
EN 921:1994
3
Water-in-water
80 °C
165 h c

EN 921:1994

3,5 MPa

4,5 MPa
5,4 MPa
Type a) a
Shall conform to
EN 921:1994
3
Water-in-water
80 °C
1000 h

EN 921:1994

3,2 MPa
4,0 MPa
5,0 MPa

Type b) end caps may be used for batch release tests for diameters ≥ 500 mm.
The number of test pieces given indicate the quantity required to establish a value for the characteristic
described in the table. The number of test pieces required for factory production control and process control
should be listed in the manufacturer’s quality plan. (for guidance see prCEN/TS 13244-7[4]).
c
Premature ductile failures are not taken into account. For retest procedure see 7.3.
a
b

7.3

Retest in case of failure at 80 °C

A fracture in a brittle mode in less than 165 h shall constitute a failure, however if a sample in the 165 h test fails in

a ductile mode in less than 165 h, a retest shall be performed at a selected lower stress in order to achieve the
minimum required time for the selected stress obtained from the line through the recommended stress/time points
given in Table 4.

13


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EN 13244-2:2002 (E)

Table 4 — Test parameters for the retest of the hydrostatic strength at 80 °C
PE 63

8
8.1

PE 80

PE 100

Stress

Test period

Stress

Test period

Stress

Test period

MPa

h

MPa

h

MPa

h

3,5

165

4,5

165

5,4

165

3,4

295

3,3

538

4,4

233

5,3

256

3,2

1 000

4,3

331

5,2

399

4,2

474

5,1

629

4,1

685

5,0

1 000

4,0

1 000

Physical characteristics
Conditioning

Unless otherwise specified by the applicable test method, the test pieces shall be conditioned at (23 ± 2) °C before
testing in accordance with Table 5.

8.2

Requirements

When tested in accordance with the test methods as specified in Table 5 using the indicated parameters, the pipe
shall have physical characteristics conforming to the requirements given in Table 5.

14


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EN 13244-2:2002 (E)

Table 5 — Physical characteristics for all pipes
Characteristics

Requirements

Test parameters

Test method

Elongation at break for
e ≤ 5 mm

≥ 350 %

Test piece shape
Speed of test
Number of test pieces a

Type 2
100 mm/min
Shall conform to
ISO 6259-1:2001

EN ISO 62591:2001 of and
ISO 6259-3:1997

Elongation at break for
5 mm < e ≤ 12 mm

≥ 350 %

Test piece shape
Speed of test
Number of test pieces a

Type 1 b
50 mm/min
Shall conform to
ISO 6259-1:2001

EN ISO 62591:2001 of and
ISO 6259-3:1997

Elongation at break for
e > 12 mm

≥ 350 %

Test piece shape
Speed of test
Number of test pieces a

Type 1 b

25 mm/min
Shall conform to
ISO 6259-1:2001

EN ISO 62591:2001 of and
ISO 6259-3:1997

OR
Test piece shape
Speed of test
Number of test pieces a

Type 3 b
10 mm/min
Shall conform to
ISO 6259-1:2001

Melt mass-flow rate
MFR for PE 63, PE 80,
and PE 100

Change of MFR
by processing
c
less than 20 %

Load
Test temperature
Time
Number of test pieces a

5 kg
190 °C
10 min
Shall conform to
EN ISO 1133:1999

EN ISO 1133:1999,
condition T

Oxidation induction time

≥ 20 min

Test temperature
Number of test pieces

200 °C d
3

EN 728

a, e
a

The number of test pieces given indicate the quantity required to establish a value for the characteristic
described in the table. The number of test pieces required for factory production control and process control
should be listed in the manufacturer's quality plan (for guidance see prCEN/TS 13244-7[4].
b
Where practical, machined type 2 test pieces may be used for pipe wall thicknesses ≤ 25 mm. The test may be

terminated when the requirement is met without continuing until the rupture of the test piece.
c
Value as measured on the pipe relative to the value measured on the compound used.
d
Test may be carried out as an indirect test at 210 °C providing that there is a clear correlation of the results to
those at 200 °C, in cases of dispute the reference temperature shall be 200 °C.
e
Samples to be taken from the inner wall surface.

9

Chemical characteristics of pipes in contact with chemicals

If, for a particular installation, it is necessary to evaluate the chemical resistance of the pipe, then the pipe shall be
tested in accordance with ISO 4433-1 and classified in accordance with ISO 4433-2.
NOTE

Guidance for the resistance of polyethylene pipes to chemicals is given in ISO/TR 10358[5].

10 Performance requirements
When pipes conforming to this standard are assembled to each other or to components conforming to other parts
of EN 13244, the joints shall conform to the requirements of EN 13244-5.

11 Marking
11.1 General
11.1.1 All pipes shall be permanently and legibly marked in such a way that the marking does not initiate cracks or
other types of failure and that normal storage, weathering, handling, installation and use shall not affect the
legibility of the marking.
15

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EN 13244-2:2002 (E)

11.1.2 If printing is used the colour of the printed information shall differ from the basic colour of the pipe.
11.1.3 The marking shall be legible without magnification.

11.2 Minimum required marking of pipes
The minimum required marking shall conform to Table 6, with the frequency of marking being not less than once
per metre.
NOTE

Attention is drawn to the possible need to include CE marking when required for legislative purposes.

Table 6 — Minimum required marking
Aspects

Marking or symbol

Standard Number

EN 13244

Manufacturer's identification

Name or symbol

Dimensions

(dn × en)

e.g. 110 × 10

SDR series

e.g. SDR 11

Material and designation

e.g. PE 80

Pressure rating in bars

e.g. PN 12,5

Production period (date or code)

e.g. 9302 a

Coils shall be sequentially marked with the length in metres, which will indicate
the length remaining on the coil.
a

In clear figures or in code providing traceability to production period within year and
month and if the manufacturer is producing at different sites, the production site.

16