ISO/TS 17902:2016

Wrapped electrofoaming joints for polyethylene (PE) piping systems with smooth outer wall for gravity drains and sewers

ISO/TS 17902:2016 specifies the definitions and requirements for wrapped electrofoaming joints for polyethylene (PE) piping systems with smooth outer wall for underground drains and sewer without pressure. ISO/TS 17902:2016 specifies product range, material characteristics, test methods and test parameters, dimension and characteristics of wrap. ISO/TS 17902:2016 is applicable to jointing pipes which have external wall thickness greater than 1,4 mm and a diameter up to DN/OD 2000, or DN/ID 2200.

Enveloppes d'assemblage électro-expansibles pour les systèmes de canalisations en polyéthylène (PE) à paroi extérieure lisse pour les collecteurs et branchements d'assainissement gravitaire

General Information

• Status: Published
• Publication Date: 03-Nov-2016
• ICS: 23.040.20 - Plastics pipes
• ICS: 23.040.45 - Plastics fittings
• ICS: 93.030 - External sewage systems
• Technical Committee: ISO/TC 138/SC 1 - Plastics pipes and fittings for soil, waste and drainage (including land drainage)
• Drafting Committee: ISO/TC 138/SC 1/WG 4 - Plastics piping systems for underground drainage and sewerage
• Current Stage: 9093 - International Standard confirmed
• Start Date: 15-Jan-2024
• Completion Date: 13-Dec-2025

Overview

ISO/TS 17902:2016 defines requirements for wrapped electrofoaming joints used with polyethylene (PE) piping systems that have a smooth outer wall for non‑pressure underground gravity drains and sewers. The technical specification covers definitions, product range, materials, geometrical and mechanical characteristics, test methods and performance requirements for joints intended for pipe wall thicknesses greater than 1.4 mm and diameters up to DN/OD 2000 or DN/ID 2200.

Key topics and technical requirements

• Joint construction: Joints consist of a main layer (PE 80 or PE 100) and a foaming layer (containing foaming and adhesive additives and an embedded electrical heating element). A removable clamping band holds the wrap during assembly.
• Materials: Main layer materials must comply with ISO 12162. The foaming layer base material density is specified (≈ 911–940 kg/m³ measured per ISO 1183-1) with permitted additives to achieve expansion and adhesion.
• Electrical and assembly: The foaming layer contains electrical thermal wire and connection terminals; assembly uses an electrofusion welding machine supplying controlled current/voltage to activate the foaming/adhesion process.
• Dimensions and range: The standard specifies dimensional limits and clamping band characteristics for nominal sizes up to DN/OD 2000 (or DN/ID 2200).
• Testing and performance: ISO/TS 17902 references standard test methods and parameters (e.g., pressure resistance, watertightness and tensile tests) and defines appearance, colour, electrical and mechanical property requirements.
• Documentation and marking: Minimum marking and identification requirements for traceability and correct application are included, plus an informative joining‑procedure guide (Annex A).

Applications and practical value

• Used to produce watertight, reliable joints for PE sewer and drainage systems where no internal pressure is present (gravity flow).
• Applicable for rehabilitation and new‑build installations of underground drains, collector sewers, and branch connections where a smooth outer wall PE pipe is used.
• Benefits include controlled on‑site activation, compatibility with deviated pipe ends, and standardised quality and testing criteria to ensure long‑term performance.

Who should use this standard

• Pipe and fitting manufacturers designing wrapped electrofoaming products
• Civil engineers, specifiers and contractors installing PE sewer/drain systems
• Testing laboratories and quality assurance teams verifying compliance
• Regulators and procurement bodies seeking harmonised product requirements

Related standards

Normative references include ISO 12162, ISO 1183‑1, ISO 1167 (pressure testing), ISO 13254 (watertightness), ISO 8772 and ISO 21138 series - all relevant when specifying, testing or installing PE non‑pressure piping systems.

Keywords: ISO/TS 17902:2016, wrapped electrofoaming joints, polyethylene (PE), smooth outer wall, gravity drains, sewers, electrofoaming, clamping band, electrofusion.

Standards Content (Sample)

TECHNICAL ISO/TS
SPECIFICATION 17902
First edition
2016-11-15
Wrapped electrofoaming joints for
polyethylene (PE) piping systems with
smooth outer wall for gravity drains
and sewers
Enveloppes d’assemblage électro-expansibles pour les systèmes de
canalisations en polyéthylène (PE) à paroi extérieure lisse pour les
collecteurs et branchements d’assainissement gravitaire
Reference number
©
ISO 2016
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2016 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
3.1 General terms and definitions . 2
3.2 Geometrical terms and definitions . 2
3.3 Material terms and definitions . 3
4 Symbols and abbreviated terms . 4
4.1 Symbols . 4
4.2 Abbreviated terms . 4
5 Material . 4
5.1 Material for the main layer . 4
5.2 Material for the foaming layer . 4
6 General requirements . 4
6.1 General description of the wrapped electrofoaming joints . 4
6.2 Appearance . 5
6.3 Colour . 6
6.4 Electrical properties . 6
7 Geometrical characteristics . 6
7.1 General . 6
7.2 Dimensions of the wrapped electrofoaming joint . 6
7.3 Dimensions of the clamping band . 8
8 Mechanical characteristics . 8
8.1 Joint material integrity . 8
8.2 Other mechanical characteristics. 8
8.2.1 Preparations and pretreatment of test pieces . 8
8.2.2 Test conditions and requirements . 8
9 Performance requirements . 9
10 Marking . 9
10.1 General . 9
10.2 Minimum required marking . 9
Annex A (informative) Wrapped electrofoaming joint joining procedure guide .11
Bibliography .13
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 on 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 the following URL: www.iso.org/iso/foreword.html.
The committee responsible for this document is ISO/TC 138, Plastics pipes, fittings and valves for the
transport of fluids, Subcommittee SC 1, Plastics pipes and fittings for soil, waste and drainage (including
land drainage).
iv © ISO 2016 – All rights reserved

Introduction
This document is the specification for electrofoaming plastic pipe joints used in non-pressure
underground drainage and sewerage for polyethylene (PE) piping systems with smooth outer wall.
The wrapped electrofoaming joints may also be applied to pipes with diametrically deviated pipe ends.
The installation procedures specified in this document are intended to describe the proper joining
method of electrofoaming joints.
An informative guidance for the joining procedure of products complying with this document is
provided in Annex A.
TECHNICAL SPECIFICATION ISO/TS 17902:2016(E)
Wrapped electrofoaming joints for polyethylene (PE)
piping systems with smooth outer wall for gravity drains
and sewers
1 Scope
This document specifies the definitions and requirements for wrapped electrofoaming joints for
polyethylene (PE) piping systems with smooth outer wall for underground drains and sewer without
pressure.
This document specifies product range, material characteristics, test methods and test parameters,
dimension and characteristics of wrap.
This document is applicable to jointing pipes which have external wall thickness greater than 1,4 mm
and a diameter up to DN/OD 2000, or DN/ID 2200.
NOTE 1 For dimensions larger than DN/OD 2000, or DN/ID 2200, this document can serve as a general guide
regarding appearance, colour, physical and mechanical characteristics as well as performance requirements.
NOTE 2 Such products are intended to be used with pipes made from virgin and reworked materials.
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 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids — Determination of
the resistance to internal pressure — Part 1: General method
ISO 1167-2, 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 1183-1, Plastics — Methods for determining the density of non-cellular plastics — Part 1: Immersion
method, liquid pyknometer method and titration method
ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions
ISO 8772, Plastics piping systems for non-pressure underground drainage and sewerage — Polyethylene (PE)
ISO 12162, Thermoplastics materials for pipes and fittings for pressure applications — Classification,
designation and design coefficient
ISO 13254, Thermoplastics piping systems for non-pressure applications — Test method for watertightness
ISO 13953, Polyethylene (PE) pipes and fittings — Determination of the tensile strength and failure mode of
test pieces from a butt-fused joint
ISO 21138-1, Plastics piping systems for non-pressure underground drainage and sewerage — Structured-
wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene
(PE) — Part 1: Material specifications and performance criteria for pipes, fittings and system
ISO 21138-2, Plastics piping systems for non-pressure underground drainage and sewerage — Structured-
wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene
(PE) — Part 2: Pipes and fittings with smooth external surface, Type A
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4435, ISO 8772, ISO 21138-1,
ISO 21138-2, ISO 13272, and ISO 1043-1 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1 General terms and definitions
3.1.1
structured-wall pipes and fittings
products that have an optimized design with regard to material usage to achieve the physical,
mechanical and performance requirements of ISO 21138-1
3.1.2
solid-wall pipe and fitting
polyethylene pipe and fitting intended for use for non-pressure underground draining and sewerage
Note 1 to entry: Products defined by this term shall comply with ISO 8772.
3.1.3
main layer
PE layer to maintain the foaming layer in contact with the pipe surfaces
3.1.4
foaming layer
PE layer to which substances are added in order to ensure expansion under specified heating conditions,
to obtain the final properties of the jointing
3.1.5
wrapped electrofoaming joint
joint consisting of a main layer (3.1.3) and a foaming layer (3.1.4) and which can be wrapped around
the pipes
3.1.6
clamping band
metallic ancillary maintaining the wrapped electrofoaming joint (3.1.5) in position during the assembly
procedure and which can be removed after cooling
3.1.7
electrofusion welding machine
electric power source that supplies constant current and/or voltage to connect the pipe with the
wrapped electrofoaming joint (3.1.5)
3.2 Geometrical terms and definitions
3.2.1
nominal size DN
numerical designation of the size of a component, other than a component designated by thread size,
which is approximately equal to the manufacturing dimension in millimetres
3.2.2
nominal size DN/OD
nominal size related to the outside diameter
2 © ISO 2016 – All rights reserved

3.2.3
nominal size DN/ID
nominal size related to the inside diameter
3.2.4
nominal diameter
d
n
specified diameter, in millimetres, assigned to a nominal size (DN/OD or DN/ID)
3.2.5
outside diameter
d
e
value of the measurement of the outside diameter through its cross-section at any point of a pipe or
fitting, rou
...