SIST EN 14758-1:2006
(Main)Plastics piping systems for non-pressure underground drainage and sewerage - Polypropylene with mineral modifiers (PP-MD) - Part 1: Specifications for pipes, fittings and the system
Plastics piping systems for non-pressure underground drainage and sewerage - Polypropylene with mineral modifiers (PP-MD) - Part 1: Specifications for pipes, fittings and the system
This European Standard specifies the requirements for solid-wall pipes, fittings and the system of piping systems made from mineral modified polypropylene materials (PP-MD) in the field of non-pressure underground drainage and sewerage outside the building structure (application area code "U"), and non-pressure underground drainage and sewerage for both buried in ground within the building structure (application area code "D") and outside the building structure.
This is reflected in the marking of products by "U" and "UD".
It also specifies the test parameters for the test methods referred to in this European Standard.
This European Standard covers a range of nominal sizes, a range of pipe series/stiffness classes and gives recommendations concerning colours.
NOTE 1 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.
In conjunction with Part 2 and Part 3 of EN 14758 (see Foreword) it is applicable to PP-MD pipes and fittings, their elastomeric sealing ring joints and to joints with components of other plastics and non-plastics materials intended to be used for buried piping systems for non-pressure underground drainage and sewerage.
This European Standard is applicable to PP-MD pipes with or without an integral socket.
NOTE 2 The fittings can be manufactured by injection-moulding or be fabricated from pipes and/or mouldings.
NOTE 3 Requirements and limiting values for application area code "D" are given in Table 4, Table 7 and Table 13.
NOTE 4 Pipes, fittings and other components conforming to any of the plastics product standards listed in Annex B can be used with pipes and fittings conforming to this European Standard, when they conform to the requirements for joint dimensions given in Clause 6 and to the requirements of Table 13.
Kunststoff-Rohrleitungssysteme für erdverlegte Abwasserkanäle und -leitungen - Polypropylen mit mineralischen Additiven (PP-MD) - Teil 1: Anforderungen an Rohre, Formstücke und das Rohrleitungssystem
Dieses Dokument legt für Rohrleitungssysteme aus mineralverstärktem Polypropylen (PP M) Anforderungen an Vollwandrohre, Formstücke und das Rohrleitungssystem für Abwasserkanäle und leitungen fest, die in erdverlegten Schwerkraftentwässerungssystemen
außerhalb der Gebäudestruktur (Anwendungskennzeichen "U") und
sowohl innerhalb (Anwendungskennzeichen "D") als auch außerhalb der Gebäudestruktur
eingesetzt werden.
Die Wahl des Anwendungsgebietes wird durch die Kennzeichnung der Erzeugnisse mit "U" bzw. "UD" angezeigt.
Dieser Teil legt auch die Prüfparameter für die Prüfverfahren fest, auf die in diesem Dokument verwiesen wird.
Dieses Dokument enthält eine Reihe von Nennweiten sowie Rohrreihen/Steifigkeitsklassen und gibt Empfehlungen hinsichtlich der Einfärbung.
ANMERKUNG 1 Der Anwender bzw. Auftraggeber ist unter Berücksichtigung der eigenen Anforderungen sowie der geltenden nationalen Festlegungen und Verlegepraktiken für die entsprechende Auswahl dieser Kriterien verantwortlich.
Zusammen mit Teil 2 und Teil 3 der prEN 14758 (siehe Vorwort) gilt dieser Teil für Rohre und Formstücke aus PP M, für deren Verbindungen mit elastomeren Dichtringen sowie für Verbindungen mit Rohrleitungsteilen aus anderen Kunststoffen oder Rohrwerkstoffen, die für erdverlegte drucklose Abwasserkanäle und leitungen vorgesehen sind.
Dieses Dokument ist für Rohre aus PP M sowohl mit als auch ohne angeformte Muffe anwendbar.
ANMERKUNG 2 Die Formstücke können im Spritzgießverfahren oder aus Rohren und/oder aus Spritzgussteilen hergestellt sein.
ANMERKUNG 3 Anforderungen und Grenzwerte für Anwendungsgebiete mit Anwendungskennzeichen "D" sind in Tabelle 4, Tabelle 7 und Tabelle 13 aufgeführt.
ANMERKUNG 4 Rohre, Formstücke oder andere Rohrleitungsteile, die einer der in Anhang B aufgeführten Produktnormen entsprechen, können mit Rohren und Formstücken nach diesem Dokument verwendet werden, sofern sie die Anforderungen an die Maße der Verbindungen nach Abschnitt 6 sowie die Anforderung
Systemes de canalisations en plastique pour les branchements et les collecteurs d'assainissement enterrés sans pression - Polypropylene avec modificateurs minéraux (PP-MD) - Partie 1: Spécifications pour les tubes, les raccords et le systeme
Le présent document spécifie les exigences pour les tubes, les raccords et le systeme de canalisations a
paroi compacte, fabriqués a partir de polypropylene avec modificateurs minéraux (PP-M) et destinés a etre
utilisés pour les branchements et les collecteurs d?assainissement enterrés sans pression a l?extérieur de la
structure du bâtiment (code de zone d?application « U »), et pour les branchements et les collecteurs
d?assainissement enterrés sans pression aussi bien a l?intérieur de la structure du bâtiment (code de zone
d?application « D ») qu?a l?extérieur de celle-ci.
Ces informations sont précisées dans le marquage des produits par les lettres « U » et « UD ».
Le présent document spécifie également les parametres d?essai pour les méthodes d?essai référencées dans
ce document.
Il couvre une gamme de dimensions nominales, une gamme de séries de tubes/classes de rigidité et donne
des recommandations concernant les couleurs.
NOTE 1 Il est de la responsabilité de l?acheteur ou du prescripteur d?effectuer les choix appropriés a partir de ces
données, en tenant compte des exigences particulieres et de toute réglementation nationale applicable ainsi que des
pratiques ou codes de pose.
En relation avec la Partie 2 et la Partie 3 du prEN 14758 (voir l?Avant-propos), ce document s?applique aux
tubes et aux raccords en PP-M, a leurs assemblages a bague d?étanchéité en élastomere et aux
assemblages avec des composants en matieres plastiques et non plastiques différentes destinés a etre
utilisés dans les systemes de canalisations enterrés pour les branchements et l?assainissement sans pression.
Le présent document est applicable aux tubes PP-M avec et sans emboîtures.
NOTE 2 Les raccords peuvent etre fabriqués par moulage par injection ou etre façonnés a partir de tubes et/ou de
pieces moulées.
Cevni sistemi iz polimernih materialov za odvodnjavanje in kanalizacijo, ki delujejo po težnostnem principu - Polipropilen z mineralnimi modifikatorji (PP-MD) – 1. del: Specifikacije za cevi, fitinge in cevni sistem
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 14758-1:2006
01-april-2006
Cevni sistemi iz polimernih materialov za odvodnjavanje in kanalizacijo, ki delujejo
po težnostnem principu - Polipropilen z mineralnimi modifikatorji (PP-MD) – 1. del:
Specifikacije za cevi, fitinge in cevni sistem
Plastics piping systems for non-pressure underground drainage and sewerage -
Polypropylene with mineral modifiers (PP-MD) - Part 1: Specifications for pipes, fittings
and the system
Kunststoff-Rohrleitungssysteme für erdverlegte Abwasserkanäle und -leitungen -
Polypropylen mit mineralischen Additiven (PP-MD) - Teil 1: Anforderungen an Rohre,
Formstücke und das Rohrleitungssystem
Systemes de canalisations en plastique pour les branchements et les collecteurs
d'assainissement enterrés sans pression - Polypropylene avec modificateurs minéraux
(PP-MD) - Partie 1: Spécifications pour les tubes, les raccords et le systeme
Ta slovenski standard je istoveten z: EN 14758-1:2005
ICS:
23.040.20 Cevi iz polimernih materialov Plastics pipes
23.040.45 Fitingi iz polimernih Plastics fittings
materialov
93.030 Zunanji sistemi za odpadno External sewage systems
vodo
SIST EN 14758-1:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 14758-1:2006
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SIST EN 14758-1:2006
EUROPEAN STANDARD
EN 14758-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2005
ICS 93.030
English Version
Plastics piping systems for non-pressure underground drainage
and sewerage - Polypropylene with mineral modifiers (PP-MD) -
Part 1: Specifications for pipes, fittings and the system
Systèmes de canalisations en plastique pour les Kunststoff-Rohrleitungssysteme für erdverlegte
branchements et les collecteurs d'assainissement enterrés Abwasserkanäle und -leitungen - Polypropylen mit
sans pression - Polypropylène avec modificateurs minéraux mineralischen Additiven (PP-MD) - Teil 1: Anforderungen
(PP-MD) - Partie 1: Spécifications pour les tubes, les an Rohre, Formstücke und das Rohrleitungssystem
raccords et le système
This European Standard was approved by CEN on 24 November 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14758-1:2005: E
worldwide for CEN national Members.
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SIST EN 14758-1:2006
EN 14758-1:2005 (E)
Contents Page
Foreword .4
1 Scope .5
2 Normative references.5
3 Terms, definitions, symbols and abbreviations.6
3.1 Terms and definitions.6
3.2 Symbols .9
3.3 Abbreviations .9
4 Material .10
4.1 PP-MD material.10
4.2 Reprocessable and recyclable material.10
4.3 Melt mass-flow rate .10
4.4 Mineral modifiers.10
4.5 Durability .11
4.6 Sealing ring retaining means.13
5 General characteristics.13
5.1 Appearance.13
5.2 Colour .13
6 Geometrical characteristics .13
6.1 General .13
6.2 Dimensions of pipes.13
6.3 Ring stiffness classes.17
6.4 Dimensions of fittings .17
6.5 Dimensions of sockets and spigots .18
6.6 Types of fittings.22
7 Mechanical characteristics of pipes .24
7.1 Mechanical characteristics of pipes.24
7.2 Mechanical characteristics of fittings .26
8 Physical characteristics .27
8.1 Physical characteristics of pipes.27
8.2 Physical characteristics of fittings.27
9 Performance requirements.28
10 Sealing rings.29
11 Marking .29
11.1 General .29
11.2 Minimum required marking of pipes .29
11.3 Minimum required marking of fittings.30
11.4 Additional marking.31
Annex A (informative) General characteristics of PP-MD pipes and fittings .32
A.1 General.32
A.2 Material characteristics .32
A.3 Ring stiffness .32
2
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A.4 Chemical resistance.33
A.5 Abrasion resistance.33
A.6 Hydraulic roughness.33
A.7 Diametric deflection.33
Annex B (informative) Standards for pipes and fittings of a material other than PP-MD.34
Bibliography.35
3
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SIST EN 14758-1:2006
EN 14758-1:2005 (E)
Foreword
This European Standard (EN 14758-1:2005) 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 2006, and conflicting national standards shall be withdrawn at
the latest by June 2006.
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.
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 14758 consists of the following parts under the general title Plastics piping systems for non-pressure
underground drainage and sewerage — Polypropylene with mineral modifiers (PP-MD)
Part 1: Specifications for pipes, fittings and the system (this document)
Part 2: Guidance for the assessment of conformity (intended to be published as CEN/Technical Specification)
Part 3: Guidance for installation (intended to be published as CEN/Technical Specification).
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
4
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SIST EN 14758-1:2006
EN 14758-1:2005 (E)
1 Scope
This European Standard specifies the requirements for solid-wall pipes, fittings and the system of piping
systems made from mineral modified polypropylene materials (PP-MD) in the field of non-pressure
underground drainage and sewerage outside the building structure (application area code "U"), and non-
pressure underground drainage and sewerage for both buried in ground within the building structure
(application area code "D") and outside the building structure.
This is reflected in the marking of products by "U" and "UD".
It also specifies the test parameters for the test methods referred to in this European Standard.
This European Standard covers a range of nominal sizes, a range of pipe series/stiffness classes and gives
recommendations concerning colours.
NOTE 1 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.
In conjunction with Part 2 and Part 3 of EN 14758 (see Foreword) it is applicable to PP-MD pipes and fittings,
their elastomeric sealing ring joints and to joints with components of other plastics and non-plastics materials
intended to be used for buried piping systems for non-pressure underground drainage and sewerage.
This European Standard is applicable to PP-MD pipes with or without an integral socket.
NOTE 2 The fittings can be manufactured by injection-moulding or be fabricated from pipes and/or mouldings.
NOTE 3 Requirements and limiting values for application area code "D" are given in Table 4, Table 7 and Table 13.
NOTE 4 Pipes, fittings and other components conforming to any of the plastics product standards listed in Annex B can
be used with pipes and fittings conforming to this European Standard, when they conform to the requirements for joint
dimensions given in Clause 6 and to the requirements of Table 13.
2 Normative references
The following referenced documents are indispensable for the application of this European Standard. 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 — Material requirements for pipe joint seals used in water and drainage
applications — Part 2: Thermoplastic elastomers
EN 744:1995, Plastics piping and ducting systems — Thermoplastics pipes — Test method for resistance to
external blows by the round-the-clock method
EN 921:1994, Plastics piping systems — Thermoplastics pipes — Determination of resistance to internal
pressure at constant temperature
EN 1055:1996, Plastics piping systems — Thermoplastics piping systems for soil and waste discharge inside
buildings — Test method for resistance to elevated temperature cycling
EN 1277:2003, Plastics piping systems — Thermoplastics piping systems for buried non-pressure
applications — Test methods for leaktightness of elastomeric sealing ring type joints
5
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SIST EN 14758-1:2006
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EN 1411, Plastics piping and ducting systems — Thermoplastics pipes — Determination of resistance to
external blows by the staircase method
EN 1446, Plastics piping and ducting systems — Thermoplastics pipes — Determination of ring flexibility
EN 1989, Thermoplastics piping and ducting systems — Joints for buried non-pressure sewerage
applications — Test method for long-term sealing performance of joints with thermoplastic elastomer (TPE)
seals by estimating the sealing pressure
EN 12061, Plastics piping systems — Thermoplastics fittings — Test method for impact resistance
EN 12256, Plastics piping systems — Thermoplastics fittings — Test method for mechanical strength or
flexibility of fabricated fittings
EN ISO 472:2001, Plastics — Vocabulary (ISO 472:1999)
EN ISO 580:2005, Plastics piping and ducting systems - Injection-moulded thermoplastics fittings - Methods
for visually assessing the effects of heating (ISO 580:2005)
EN ISO 1043-1:2001, Plastics — Symbols and abbreviated terms — Part 1: Basic polymers and their special
characteristics (ISO 1043-1:2001)
EN ISO 1133:2005, Plastics — Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate
(MVR) of thermoplastics (ISO 1133:2005)
EN ISO 2505:2005, Thermoplastics pipes - Longitudinal reversion - Test method and parameters (ISO
2505:2005)
EN ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions
(ISO 3126:2005)
EN ISO 9969, Thermoplastics pipes — Determination of ring stiffness (ISO 9969:1994)
ISO 6259-3, Thermoplastics pipes — Determination of tensile properties — Part 3: Polyolefin pipes
ISO 13967, Thermoplastics fittings — Determination of ring stiffness
3 Terms, definitions, symbols and abbreviations
3.1 Terms and definitions
For the purposes of this European Standard, the terms, definitions and symbols given in EN ISO 472:2001
and EN ISO 1043-1:2001 and the following apply.
3.1.1
application area code
code used in the marking of pipes and fittings to indicate the application area 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 In code D application areas, the existence of hot water discharge in addition to the external forces from the
surroundings is usual.
6
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3.1.2 Geometrical definitions
3.1.2.1
nominal size
DN
numerical designation of the size of a component, which is a convenient round number approximately equal to
the manufacturing dimension, in millimetres
3.1.2.2
nominal size
DN/OD
nominal size, related to the outside diameter
3.1.2.3
nominal outside diameter
d
n
specified outside diameter, in millimetres, assigned to a nominal size (DN/OD)
3.1.2.4
outside diameter
d
e
value of the measurement of the outside diameter through its cross section at any point of a pipe or spigot end
of a fitting, rounded up to the next greater 0,1 mm
3.1.2.5
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
3.1.2.6
mean inside diameter of a socket
d
s,m
arithmetical mean of a number of measurements of the inside diameter of a socket in the same cross section
3.1.2.7
wall thickness
e
value of the measurement of the wall thickness at any point around the circumference of a component
3.1.2.8
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
3.1.2.9
pipes series
S
[1]
number for pipe designation (see ISO 4065 )
7
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3.1.2.10
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 , and the minimum wall thickness, e
n min
3.1.2.11
nominal ring stiffness
SN
numerical designation of the ring stiffness of a pipe or fitting, which is a convenient round number, relative to
2
the determined stiffness in kiloNewtons per square metre (kN/m ), indicating the minimum ring stiffness of a
pipe or fitting
3.1.2.12
design length
Z
length of a fitting (e.g. the main pipe of a branch) excluding any spigot or socket length. In case of a change
in direction (e.g. in case of a bend or the service pipe of a branch), it is the length from one end to the
intersection of the straight axis of this end with the straight axis of the other end of the fitting, excluding any
spigot or socket length (see the dimensions Z and Z in e.g. Figures 7 and 11)
1 2
3.1.3 Material definitions
3.1.3.1
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 and to which no reprocessable or recyclable material has been added
3.1.3.2
mineral modified material (PP-MD)
material to which has been added minerals during specific processing operation(s) which during such
processing is well distributed in the material
3.1.3.3
mean particle size
D50
diameter which 50 % by mass of the particles of a mineral modifier is smaller than
3.1.3.4
particle top cut
D98
diameter which 98 % by mass of the particles of a mineral modifier is smaller than
3.1.3.5
own reprocessable material
material prepared from rejected unused pipes or fittings including trimmings from the production of pipes or
fittings, 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
3.1.3.6
external reprocessable material
material comprising either one of the following forms:
a) material from rejected unused pipes or fittings or trimmings there from, that will be reprocessed and that
were originally processed by another manufacturer;
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b) material from the production of unused products other than pipes and fittings, regardless of where they
are manufactured
3.1.3.7
recyclable material
material comprising either one of the following forms:
a) material from used pipes or fittings which have been cleaned and crushed or ground;
b) material from used products other than pipes or fittings which have been cleaned and crushed or ground
3.2 Symbols
A length of engagement
C depth of sealing zone
D50 mean particle size
D98 particle top cut
d outside diameter
e
d mean outside diameter
em
d mean inside diameter
i
m
d nominal outside diameter
n
d mean inside diameter of a socket
sm
e wall thickness
e mean wall thickness
m
e wall thickness of a socket
2
e wall thickness in the groove area
3
l effective length of a pipe
L length of spigot
1
M length of spigot of a plug
R radius of swept fittings
Z design length of (a part) of a fitting
α nominal angle of a fitting
3.3 Abbreviations
CaCO calcium carbonate
3
DN nominal size
DN/OD nominal size, outside diameter related
MFR melt mass-flow rate
9
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MgCO magnesium carbonate
3
Mg Si O (OH) magnesium silicate
3 4 10 2
PP polypropylene
PP-MD mineral modified polypropylene
SDR standard dimension ratio
SN nominal ring stiffness
TIR true impact rate
4 Material
4.1 PP-MD material
The base material for PP-MD pipes and fittings shall be a polypropylene base material to which are added
mineral modifier(s) of known specification and containing those other additives that are needed to facilitate the
manufacture of components conforming to the requirements of this European Standard.
4.2 Reprocessable and recyclable material
In addition to virgin material the use of the manufacturer’s own reprocessable material obtained during the
production and testing of products conforming to this European Standard and by using material from piping
components of own production is permitted. External reprocessable or recyclable material shall not be used.
4.3 Melt mass-flow rate
Pipes and fittings shall be made from PP-MD materials where the PP base material has an MFR as follows:
MFR (230/2,16) ≤ 1,5 g/10 min.
The MFR of the base material shall be tested in accordance with EN ISO 1133:2005, Annex A, condition M
(temperature: 230 °C; loading mass: 2,16 kg).
4.4 Mineral modifiers
4.4.1 Types of mineral modifiers
The mineral modifiers shall be of following types:
coated calcium carbonate, CaCO
3
or
talc.
When it is calcium carbonate following apply:
content of CaCO ≥ 96 % by mass;
3
content of MgCO ≤ 4 % by mass;
3
content of CaCO and MgCO in total ≥ 98 % by mass.
3 3
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When it is talc following apply:
content of magnesium silicate (Mg Si O (OH) ) ≥ 97 % by mass.
3 4 10 2
NOTE The addition of mineral modifiers is an effective way of increasing the E-modulus of the base polypropylene
material.
4.4.2 Characteristics of mineral modifiers
The physical properties of modifiers shall conform to the following:
For CaCO :
3
mean particle size, D50 ≤ 2,5 µm;
particle top cut, D98 ≤ 20 µm.
For talc:
mean particle size; D50 ≤ 7 µm;
particle top cut, D98 ≤ 30 µm.
4.4.3 Content of mineral modifier
The content of mineral modifier in pipes and fittings shall be less than 50 % by mass.
The actual quantity and specification of mineral modifier shall be specified in the manufacturers quality plan.
4.4.4 Dispersion of mineral modifiers
To ensure a good dispersion of the mineral modifier, the pipe shall be pressure tested in accordance with
EN 921:1994 at 80 °C with circumferential (hoop) stress of 5,5 MPa. No failure within the test period of one
hour.
4.5 Durability
The durability of the material shall be demonstrated by testing samples in pipe form according to 4.5.1 and
4.5.2.
4.5.1 Resistance to internal pressure
When tested in accordance with the test method as specified in Table 1, using the indicated parameters, the
material shall have characteristics conforming to the requirements given in Table 1.
The material shall be tested in the form of a pipe.
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Table 1 — Material characteristics (long-term behaviour)
Characteristic Requirements Test parameters Test method
Resistance to No failure End caps Types a) or b) EN 921:1994
internal during the test Test temperature 80 °C
pressure period Orientation Not specified
Number of test pieces 3
Circumferential (hoop) stress 4,2 MPa
Conditioning period 1 h
Type of test water-in-water
Test period 140 h
Resistance to No failure End caps Types a) or b) EN 921:1994
internal during the test Test temperature 95 °C
pressure period Orientation Not specified
Number of test pieces 3
Circumferential (hoop) stress 2,5 MPa
Conditioning period 1 h
Type of test Water-in-water
Test period 1 000 h
4.5.2 Long term durability test
Long-term durability of the PP-MD material shall be tested by conditioning an extruded pipe sample of
dimension d = 110 mm after the ends are closed, under the conditions given below:
e
conditioning time: 1 year (8 760 h);
internal pressure: (0,5 ± 0,1) bar;
conditioning temperature: (95 ± 1) °C;
conditioning environment: water-in-water.
No breakage or leakage shall occur during the one-year conditioning period.
After conditioning in one year the pipe shall be tested on ring stiffness in accordance EN ISO 9969 and ring
flexibility in accordance with EN 1446 and meet the relevant requirements in Table 6.
Test pieces cut from the pipe shall be subjected to tensile testing in accordance with ISO 6259-3 at
(23 ± 2) °C with the following amendments:
5.1.2: test piece type 2 for wall thicknesses < 5 mm and type 1 for wall thicknesses ≥ 5 mm.
Clause 7: test speed 10 mm/min for both type 1 and type 2 test pieces.
The test piece shall be prepared by machining.
Both tensile strength and elongation at break shall be controlled on five test pieces and the test result shall be
calculated as the mean value of the five individual tests.
When test results after one year conditioning according to above specified parameters are compared with test
results on test pieces taken from non-conditioned pipe, the tensile strength and elongation at break shall not
be reduced by more than 25 % after the conditioning.
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SIST EN 14758-1:2006
EN 14758-1:2005 (E)
4.6 Sealing ring retaining means
Sealing rings may be retained using means made from polymers other than PP-MD.
5 General characteristics
5.1 Appearance
When viewed without magnification, the following requirements apply.
The 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
European Standard.
Pipe ends shall be cleanly cut and the ends of pipes and fittings shall be square to their axis.
5.2 Colour
The pipes and fittings shall be coloured through the wall except that in thin external and/or internal layers the
use of colours are accepted for the purpose of colour coding, video inspection and/or UV-protection.
1)
The colour should preferably be black, orange-brown (approximately RAL 8023) or dusty grey
1)
(approximately RAL 7037) . Other colours may be used.
6 Geometrical characteristics
6.1 General
Dimensions shall be measured in accordance with EN ISO 3126.
NOTE The figures are schematic sketches only to ind
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