ISO/DTS 22101-1.3

Polyethylene reinforced with short glass fibres (PE-sGF) piping systems for industrial applications

Systèmes de canalisations en polyéthylène renforcé de fibres de verre courtes (PE-sGF) pour les applications industrielles

General Information

• Status: Published
• ICS: 23.040.01 - Pipeline components and pipelines in general
• Technical Committee: ISO/TC 138/SC 3 - Plastics pipes and fittings for industrial applications
• Drafting Committee: ISO/TC 138/SC 3/WG 8 - Polyethylene reinforced with short glass fibres (PE-sGF) piping systems for industrial applications
• Current Stage: 4060 - Close of voting
• Start Date: 15-Oct-2020
• Completion Date: 14-Oct-2020

Standards Content (sample)

DRAFT INTERNATIONAL STANDARD
ISO/DIS 22101-1
ISO/TC 138/SC 3 Secretariat: UNI
Voting begins on: Voting terminates on:
2020-07-22 2020-10-14
Polyethylene reinforced with short glass fibres (PE-sGF)
piping systems for industrial applications —
Part 1:
General
ICS: 23.040.01
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
This document is circulated as received from the committee secretariat.
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 22101-1:2020(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2020
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ISO/DIS 22101-1:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

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ii © ISO 2020 – All rights reserved
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ISO/DIS 22101-1:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 2

3.1 Definitions related to geometrical characteristics ................................................................................................... 3

3.2 Definitions of materials ................................................................................................................................................................... 4

3.3 Definitions related to material characteristics ............................................................................................................ 5

3.4 Definitions related to service conditions ......................................................................................................................... 6

4 Symbols and abbreviated terms ........................................................................................................................................................... 6

4.1 Symbols ......................................................................................................................................................................................................... 6

4.2 Abbreviated terms ............................................................................................................................................................................... 7

5 Material .......................................................................................................................................................................................................................... 7

5.1 PE compound ........................................................................................................................................................................................... 7

5.2 Short glass fibres ................................................................................................................................................................................... 7

5.3 Coupling agent ......................................................................................................................................................................................... 8

5.4 PE-sGF compound ................................................................................................................................................................................ 8

5.5 Colour ...........................................................................................................................................................................................................10

5.6 Designation and classification ................................................................................................................................................10

5.7 Design coefficient and design stress .................................................................................................................................10

Annex A (informative) Specific characteristics for determination of long term strength

of polyethylene reinforced with short glass fibres (PE-sGF) piping systems for

industrial applications ................................................................................................................................................................................11

Annex B (informative) Pressure reduction coefficient ...................................................................................................................13

Annex C (informative) PE-sGF winding process .....................................................................................................................................14

Bibliography .............................................................................................................................................................................................................................16

© ISO 2020 – All rights reserved iii
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ISO/DIS 22101-1:2020(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

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

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 03, Plastics pipes and fittings for industrial applications.

ISO 22101 consists of the following parts, under the general title Polyethylene reinforced with short glass

fibres (PE-sGF) piping systems for industrial applications
Part 1: General
Part 2: Pipes
Part 3: Fittings
Part 5: Fitness for purpose of the system

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.
iv © ISO 2020 – All rights reserved
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ISO/DIS 22101-1:2020(E)
Introduction

The pipe systems which consist of pipes produced by adding short glass fibres into high density

polyethylene resins are called polyethylene reinforced with short glass fibres (PE-sGF) piping systems.

The physical and mechanical properties are influenced by short glass fibre orientation. This document

is applicable to pipe inside diameter from 200 mm to 2000 mm with integrated socket and spigot

fusion joint.

The technology of production of PE-sGF pipes is completely different than the traditional one, used

during the PE pipes extrusion, for this reason this document makes reference to SIDR. To prevent the

confusion, the parameter SDR, commonly used for PE products, has been deleted from the document.

The PE-sGF system is intended to be used for general purpose fluids supply (e.g.: chemical plants,

industrial sewerage engineering, power plants, agricultural production plants, water treatment).

For the material subject of this document the mechanical performances are obtained on the basis of

standards dedicated to thermoplastics, the geometrical characteristics are defined exclusively for this

material in analogy to ISO 4065 [1].
© ISO 2020 – All rights reserved v
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DRAFT INTERNATIONAL STANDARD ISO/DIS 22101-1:2020(E)
Polyethylene reinforced with short glass fibres (PE-sGF)
piping systems for industrial applications —
Part 1:
General
1 Scope

This International Standard specifies the general aspects of short glass fibre reinforced polyethylene

(PE-sGF) piping systems manufactured by spiral cross winding method used in above and below

ground for the conveyance of fluids for industrial and agricultural use shown below:

— Chemical plant;
— Industrial sewerage engineering;
— Power engineering (cooling and general-purpose water supply );
— Agricultural production plants;
— Water treatment;
— Small hydraulic power plant (general-purpose water supply);

In conjunction with the other parts of ISO 22101, it applies to PE-sGF pipes, fittings and their joints with

each other, with other PE-sGF components, and to components from other materials intended for use

under the following conditions:
a) allowable operating pressure (PFA) up to and including 25 bar;
b) operating temperature of 20°C as the reference temperature.
NOTE 1 For other operating temperature, guidance is given in Annex B

NOTE 2 If needed, national regulations for specific applications (e.g. water treatment) apply. This standard is

not applicable to drinking water application.

Other application areas are permitted if the requirements of this International Standard and/or

applicable national requirements are fulfilled.

National regulations in respect of fire behaviour and explosion risk are applicable. This document is

covering only PE-sGF using glass fibre with lengths comprised in the range between 2 and 5 mm.

Components conforming to any of the product standards listed in the bibliography or with national

standards, as applicable, may be used with components conforming to this International Standard,

provided that they conform to the requirements for joint dimensions and to the relevant requirements

of this International Standard.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 3, Preferred numbers — Series of preferred numbers
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ISO/DIS 22101-1:2020(E)

ISO 179-1, Plastics — Determination of Charpy impact properties — Part 1: Non-instrumented impact test

ISO 497, Guide to the choice of series of preferred numbers and of series containing more rounded values of

preferred numbers

ISO 527-1, Plastics — Determination of tensile properties — Part 1: General principles

ISO 1133-1, Plastics — Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR)

of thermoplastics — Part 1: Standard method

ISO 1183-1, Plastics — Methods for determining the density of non-cellular plastics — Part 1: Immersion

method, liquid pycnometer method and titration method

ISO 1183-2, Plastics — Methods for determining the density of non-cellular plastics — Part 2: Density

gradient column method
ISO 1887, Textile glass — Determination of combustible-matter content

ISO 1888, Textile glass — Staple fibres or filaments — Determination of average diameter

ISO 2078, Textile glass — Yarns — Designation
ISO 3344, Reinforcement products — Determination of moisture content

ISO 4427-1, Plastics piping systems for water supply and for drainage and sewerage under pressure —

Polyethylene (PE) — Part 1: General

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

ISO 6259-3, Thermoplastics pipes — Determination of tensile properties — Part 3: Polyolefin pipes

ISO 7510, Plastics piping systems — Glass-reinforced plastics (GRP) components — Determination of the

amounts of constituents

ISO 11357-6, Plastics — Differential scanning calorimetry (DSC) — Part 6: Determination of oxidation

induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT)

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

Metric series

ISO 13479, Polyolefin pipes for the conveyance of fluids — Determination of resistance to crack

propagation — Test method for slow crack growth on notched pipes
ISO 15512, Plastics — Determination of water content

ISO 16770, Plastics — Determination of environmental stress cracking (ESC) of polyethylene — Full-notch

creep test (FNCT)

ISO 22314, Plastics — Glass-fibre-reinforced products — Determination of fibre length

3 Terms and definitions

For the purposes of this International Standard, the following 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/
2 © ISO 2020 – All rights reserved
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ISO/DIS 22101-1:2020(E)
3.1 Definitions related to geometrical characteristics
3.1.1
out-of-roundness

difference between the maximum and the minimum inside diameters in the same cross-section of a

pipe or spigot
3.1.2
nominal wall thickness

numerical designation of the wall thickness of a component, which is a convenient round number,

approximately equal to the manufacturing dimension in millimetres (mm), corresponding to the

minimum wall thickness, e
min
3.1.3
wall thickness at any point

measured wall thickness at any point around the circumference of a component, rounded up to the

nearest 0,1 mm
3.1.4
pipe series
dimensionless number for pipe designation conforming the following formula:
SIDR+1

Note 1 to entry: The relationship between the pipe series, S , and the standard inside dimension ratio, SIDR, is

given by the following formula as derived from ISO 4065.
3.1.5
standard inside dimension ratio
SIDR

ratio of the nominal inside diameter, d , of a pipe to its nominal wall thickness, e

i n

Note 1 to entry: The standard inside dimension ratio SIDR and the pipe series S are related as shown in the

formula :
SIDR=−21S
3.1.6
nominal size
DN/ID

numerical designation of the size of a component related to the inside diameter, other than a component

designated by a thread size, which is a convenient round number, approximately equal to the

manufacturing dimension in millimetres (mm)
3.1.7
nominal inside diameter
specified inside diameter, in millimetres, assigned to a nominal size DN/ID
3.1.8
inside diameter at any point

value of the measurement of the inside diameter through its cross-section at any point of the pipe,

except the socket, rounded to the next greater 0,1 mm
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ISO/DIS 22101-1:2020(E)
3.1.9
mean inside diameter

value of the measurement of the inner circumference of the pipe in any cross section, except the socket,

divided by π (= 3,142), rounded to the next greater 0,1 mm
3.1.10
ring stiffness

mechanical characteristic of a pipe or fitting which is a measure of the resistance to ring deflection

under an external force as determined in accordance with ISO 9969 (for pipes) and ISO 13967 (for

fittings)
3.1.11
ring stiffness class

numerical designation of the ring stiffness of the pipe or fitting which is a convenient round number,

indicating the minimum required ring stiffness of the pipe or fitting
3.1.12
minimum wall thickness at any point
min

minimum value of the wall thickness at any point around the circumference of a component as specified

3.1.13
maximum wall thickness at any point
max

maximum value of the wall thickness at any point around the circumference of a component as specified

3.1.14
mean wall thickness

arithmetic mean of a number of measurements regularly spaced around the circumference of the

compo
...