ISO 10466:2021

INTERNATIONAL ISO
STANDARD 10466
Second edition
2021-04
Glass-reinforced thermosetting
plastics (GRP) pipes — Test method
to prove the resistance to initial ring
deflection
Tubes en plastiques thermodurcissables renforcés de verre (PRV) —
Méthode d'essai pour établir la résistance à la déflexion annulaire
initiale
Reference number
ISO 10466:2021(E)
©
ISO 2021

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ISO 10466:2021(E)

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ISO 10466:2021(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 3
5.1 Compressive-loading machine . 3
5.2 Load application surfaces . 3
5.2.1 General arrangement . 3
5.2.2 Plates . 3
5.2.3 Beam bars . 4
5.3 Dimension-measuring instruments . 4
5.4 Temperature-measuring instrument . 4
6 Test pieces . 4
6.1 Preparation . 4
6.2 Number . 4
6.3 Determination of dimensions . 4
6.3.1 Wall thickness . 4
6.3.2 Mean diameter . 5
7 Conditioning . 5
8 Procedure. 5
8.1 Test temperature . 5
8.2 Choice of load application surfaces and positioning of the test piece . 5
8.3 Application of load and measurement of deflection . 5
9 Test report . 6
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ISO 10466:2021(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
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World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for
the transport of fluids, Subcommittee SC 6, Reinforced plastics pipes and fittings for all applications.
This second edition cancels and replaces the first edition (ISO 10466:1997), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— Clause 2, "Normative references", has been added;
— subclause 5.3, "Dimension-measuring instruments, capable of determining", has been amended;
— subclause 6.3, "Determination of dimensions", has been amended.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
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INTERNATIONAL STANDARD ISO 10466:2021(E)
Glass-reinforced thermosetting plastics (GRP) pipes — Test
method to prove the resistance to initial ring deflection
1 Scope
This document specifies a method for testing the ability of glass-reinforced thermosetting plastics
(GRP) pipes to withstand specified levels of initial ring deflection without displaying surface damage
and/or structural failure.
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.
ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
vertical deflection
y
vertical change in diameter of a pipe in a horizontal position in response to a vertical compressive load
Note 1 to entry: It is expressed in metres.
3.2
relative vertical deflection
y/d
m
ratio of the vertical deflection, y, (3.1) to the mean diameter, d (3.3), of the pipe
m
3.3
mean diameter
d
m
diameter of the circle corresponding to the middle of the pipe wall cross-section and given, in metres
(m), by either of the following formulae:
dd=+e
mi
dd=−e
m e
where
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ISO 10466:2021(E)

d is the internal diameter, in metres;
i
d is the external diameter, in metres;
e
e is the wall thickness of the pipe, in metres.
3.4
visual evidence of structural failure
unless otherwis
...