FprEN 15542

Ductile iron pipes, fittings and accessories - External cement mortar coating for pipes - Requirements and test methods

This document specifies the requirements and test methods applicable to factory applied cement mortar coatings for the external corrosion protection of ductile iron pipes conforming to EN 545, EN 598 and EN 969 for use at operating temperatures up to 50 °C.
Coatings according to this document are suitable for soils of all common corrosion loads and trenchless applications.
Special activities on site such as joint protection, tapping, clamping, etc. could affect the corrosion protection properties of the cement mortar coating. These operations should be covered in the laying instructions supplied by the manufacturers of pipes, clamps, house connection saddles, etc. and any relevant users' procedures. Such instructions are not part of this document.

Rohre, Formstücke und Zubehör aus duktilem Gusseisen - Zementmörtelumhüllung von Rohren - Anforderungen und Prüfverfahren

Dieses Dokument legt die Anforderungen und Prüfverfahren fest für werkseitig aufgebrachte Zementmörte
lumhüllungen für den äußeren Korrosionsschutz von Rohren aus duktilem Gusseisen nach EN545, EN598 und EN969 für die Verwendung bei Betriebstemperaturen bis 50°C.
Umhüllungen nach diesem Dokument sind für alle Böden mit üblichen Korrosionsbelastungen und für graben
lose Anwendungen geeignet.
Spezielle vor Ort durchgeführte Maßnahmen, wie z.B. Schutz der Verbindungen, Anbohren, Herstellen von Klemmverbindungen usw., könnten die Korrosionsschutzeigenschaften der Zementmörtelumhüllung beein
flussen. Diese Arbeiten sollten in den Einbauanleitungen der Hersteller von Rohren, Klemmelementen,
anschlussstücken usw. und allen einschlägigen Arbeitsanleitungen für den Anwender angegeben sein. Diese Anleitungen sind nicht Teil dieses Dokuments.

Tuyaux, raccords et accessoires en fonte ductile - Revêtement extérieur en mortier de ciment pour tuyaux - Prescriptions et méthodes d'essai

Le présent document établit les prescriptions et les méthodes d’essai applicables aux revêtements en mortier de ciment appliqués en usine pour protéger de la corrosion extérieure les tuyaux en fonte ductile conformes à l’EN 545, l’EN 598 et l’EN 969 et destinés à être utilisés à des températures de service allant jusqu’à 50 °C.
NOTE   Les revêtements selon le présent document sont adaptés aux sols de toutes les applications en milieu corrosif et sans tranchée courantes.
Des activités particulières effectuées sur le site telles que la protection des joints, le taraudage, le bridage etc. peuvent avoir une incidence sur les propriétés de protection contre la corrosion du revêtement en mortier de ciment. Il convient de faire figurer ces opérations dans les instructions relatives à la pose fournies par les fabricants de tuyaux, brides et piquages à selle pour branchements domestiques etc. ainsi que dans les procédures pertinentes des utilisateurs. Ces instructions ne font pas partie intégrante du présent document.

Cevi, fitingi in pribor iz duktilne železove litine - Zunanje prevleke cevi iz cementne malte - Zahteve in preskusne metode

General Information

• Status: Not Published
• Publication Date: 24-Feb-2026
• ICS: 23.040.01 - Pipeline components and pipelines in general
• Technical Committee: CEN/TC 203 - Cast iron pipes, fittings and their joints
• Drafting Committee: CEN/TC 203/WG 8 - Coatings for pipes, fittings and accessories
• Current Stage: 5060 - Closure of Vote - Formal Approval
• Start Date: 11-Dec-2025
• Completion Date: 11-Dec-2025
• Ref Project: kSIST FprEN 15542:2023 - Ductile iron pipes, fittings and accessories - External cement mortar coating for pipes - Requirements and test methods

Relations

• Revises: EN 15542:2008 - Ductile iron pipes, fittings and accessories - External cement mortar coating for pipes - Requirements and test methods
• Effective Date: 18-Jan-2023

Overview

FprEN 15542 - "Ductile iron pipes, fittings and accessories - External cement mortar coating for pipes - Requirements and test methods" (CEN draft) specifies requirements and test methods for factory-applied external cement mortar coatings used as corrosion protection on ductile iron pipes (EN 545, EN 598, EN 969) at operating temperatures up to 50 °C. The document covers coating composition, minimum thickness, mechanical performance (adhesion and impact), inspection and testing regimes, marking and repair procedures. Coatings complying with this standard are suitable for soils with common corrosion loads and for trenchless applications.

Key topics and technical requirements

• Coating system: multi-layer external system typically comprising a zinc or zinc-alloy thermal spray and a cement mortar layer; optional primer, polymer additives, surface tissue or finishing layer.
• Thickness: nominal fresh and cured cement mortar thickness 5 mm, with individual minimum values 3 mm (measured per the standard’s test methods).
• Pipe ends / uncoated zones: spigot must remain uncoated over an appropriate length “a” (manufacturer-defined); socket front-end uncoated length “b” ≤ 40 mm. Uncoated areas require finishing layer protection per EN 545/598/969.
• Materials:
  • Cement: CEM III/A or CEM III/B (EN 197‑1).
  • Aggregates: clean quartz sand meeting EN 13055.
  • Fibres: E‑type glass (EN 14020), alkali‑resistant glass or polymeric fibres.
  • Organic additives (primers, polymer additives, polymeric fibres): saponification resistance > 45 ml.
• Performance:
  • Adhesion: minimum 0.5 MPa (pull-off).
  • Impact resistance: no chipping under the defined test.
  • Appearance: cured coating must adhere, be free of hollow areas, and contain no loose particles (minor hairline cracks and protruding grains/fibres allowed).
• Testing: routine and performance tests are specified; repairs must follow manufacturer instructions and be tested accordingly.
• Marking: pipes must be marked per EN 545/598/969 with reference to EN 15542.

Applications and practical value

• Protects ductile iron water, sewerage and gas pipelines against external corrosion.
• Suitable for buried pipelines in typical soils and for trenchless installation methods.
• Useful for utilities, pipeline designers, specifiers and contractors who need a standardized external protection system to ensure long-term durability and consistent acceptance testing.
• Helps manufacturers demonstrate conformity through defined routine and performance tests, and supports procurement and quality assurance.

Who should use this standard

• Pipe and fitting manufacturers
• Water, wastewater and gas utilities
• Pipeline designers and consulting engineers
• Contractors and installers (for compliance and specification)
• Test laboratories and certification bodies

Related standards

• EN 545, EN 598, EN 969 (ductile iron pipes)
• EN 197‑1 (cement)
• EN 13055 (aggregates)
• EN 14020 series (glass fibres)
• EN ISO 4624 (adhesion test)
• ISO 695 / ISO 719 (glass resistance tests)

Keywords: FprEN 15542, external cement mortar coating, ductile iron pipes, corrosion protection, test methods, EN 545, EN 598, EN 969, CEN.

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 15542:2022
01-januar-2022
Cevi, fitingi in pribor iz duktilne železove litine - Zunanje prevleke cevi iz cementne
malte - Zahteve in preskusne metode
Ductile iron pipes, fittings and accessories - External cement mortar coating for pipes -
Requirements and test methods
Rohre, Formstücke und Zubehör aus duktilem Gusseisen - Zementmörtelumhüllung von
Rohren - Anforderungen und Prüfverfahren
Tuyaux, raccords et accessoires en fonte ductile - Revêtement extérieur en mortier de
ciment pour tuyaux - Prescriptions et méthodes d'essais
Ta slovenski standard je istoveten z: prEN 15542
ICS:
23.040.10 Železne in jeklene cevi Iron and steel pipes
23.040.40 Kovinski fitingi Metal fittings
oSIST prEN 15542:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 15542:2022
oSIST prEN 15542:2022
DRAFT
EUROPEAN STANDARD
prEN 15542
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2021
ICS 23.040.01 Will supersede EN 15542:2008
English Version
Ductile iron pipes, fittings and accessories - External
cement mortar coating for pipes - Requirements and test
methods
Tuyaux, raccords et accessoires en fonte ductile - Rohre, Formstücke und Zubehör aus duktilem
Revêtement extérieur en mortier de ciment pour Gusseisen - Zementmörtelumhüllung von Rohren -
tuyaux - Prescriptions et méthodes d'essais Anforderungen und Prüfverfahren
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 203.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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 CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
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.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15542:2021 E
worldwide for CEN national Members.

oSIST prEN 15542:2022
prEN 15542:2021 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Ordering information . 7
5 Technical requirements . 7
5.1 Zinc or zinc alloy coating . 7
5.2 Fresh cement mortar layer thickness. 7
5.3 Pipe ends . 8
5.4 Appearance of cured cement mortar coating . 8
5.5 Thickness of cured cement mortar coating . 8
5.6 Repairs . 9
5.7 Marking . 9
6 Performance requirements . 9
6.1 Cement mortar constituents . 9
6.2 Adhesion . 10
6.3 Impact resistance . 10
7 Test methods . 10
7.1 Routine tests . 10
7.2 Performance tests . 11
Annex A (informative) Quality assurance . 13
Annex B (informative) Application process . 15
Annex C (informative) Explanatory notes . 16
Bibliography . 17

oSIST prEN 15542:2022
prEN 15542:2021 (E)
European foreword
This document (prEN 15542:2021) has been prepared by Technical Committee CEN/TC 203 “Cast iron
pipes, fittings and their joints”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 15542:2008.
oSIST prEN 15542:2022
prEN 15542:2021 (E)
Introduction
This document is in conformity with the general requirements already established by CEN/TC 164 in
the field of water supply (e.g. potable water) and CEN/TC 165 in the field of waste water.
In respect of potential adverse effects on the quality of water intended for human consumption, caused
by the product covered by this document:
a) this document provides no information as to whether the product may be used without restriction
in any of the member states of the EU or EFTA;
b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing
national regulations concerning the use and/or the characteristics of this product remain in force.
oSIST prEN 15542:2022
prEN 15542:2021 (E)
1 Scope
This document defines the requirements and test methods applicable to factory applied cement mortar
coatings for the external corrosion protection of ductile iron pipes conforming to EN 545, EN 598 and
EN 969 for use at operating temperatures up to 50 °C.
NOTE Coatings according to this document are suitable for soils of all common corrosion loads and trenchless
applications.
Special activities on site such as joint protection, tapping, clamping, etc. could affect the corrosion
protection properties of the cement mortar coating. These operations should be covered in the laying
instructions supplied by the manufacturers of pipes, clamps, house connection saddles, etc. and any
relevant users' procedures. Such instructions are not part of this document.
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.
EN 197-1, Cement - Part 1: Composition, specifications and conformity criteria for common cements
EN 197-2, Cement - Part 2: Assessment and verification of constancy of performance
EN 545, Ductile iron pipes, fittings, accessories and their joints for water pipelines - Requirements and test
methods
EN 598, Ductile iron pipes, fittings, accessories and their joints for sewerage applications - Requirements
and test methods
EN 969, Ductile iron pipes, fittings, accessories and their joints for gas pipelines - Requirements and test
methods
EN 13055, Lightweight aggregates
EN 14020-1, Reinforcements - Specification for textile glass rovings - Part 1: Designation
EN 14020-2, Reinforcements - Specification for textile glass rovings - Part 2: Methods of test and general
requirements
EN ISO 527-1, Plastics - Determination of tensile properties - Part 1: General principles (ISO 527-1)
EN ISO 527-2, Plastics - Determination of tensile properties - Part 2: Test conditions for moulding and
extrusion plastics (ISO 527-2)
EN ISO 4624, Paints and varnishes - Pull-off test for adhesion (ISO 4624)
ISO 695, Glass - Resistance to attack by a boiling aqueous solution of mixed alkali - Method of test and
classification
ISO 719, Glass - Hydrolytic resistance of glass grains at 98 °C - Method of test and classification
ISO 2591-1, Test sieving - Part 1: Methods using test sieves of woven wire cloth and perforated metal plate
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
oSIST prEN 15542:2022
prEN 15542:2021 (E)
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 https://www.electropedia.org/
3.1
ductile iron
cast iron used for pipes, fittings and accessories in which graphite is present substantially in spheroïdal
form
3.2
cement mortar coating
external multi-layer coating system for ductile iron pipes, principally consisting of at least the two
following layers:
— zinc or zinc alloy coating
— cement mortar layer
Note 1 to entry: Polymer additive, primer, pigments, surface tissue, finishing layer on zinc or zinc alloy coating
depending on the application method used by the different manufacturers.
3.3
zinc or zinc alloy coating
coating intended to protect the ductile iron and applied to the pipe by means of a thermal spraying
process
3.4
primer
resin which serves as adhesive to the cement mortar layer
3.5
cement mortar layer
cement mortar system reinforced with or without fibres
Note 1 to entry: It can be polymer modified and/or pigmented and can be covered with a layer of surface tissue.
3.6
fibres
inert reinforcement, which is added to the cement mortar layer
EXAMPLE Alcali resistant glass fibres, special electrical grade glass fibres (E-type glass), polymeric fibres.
3.7
pigments
material added to the fresh cement mortar in order to identify the medium to be transported
3.8
polymer additive
organic material added to the fresh cement mortar in order to improve the workability and to reduce
the water/cement ratio and to improve the performance of the cement mortar layer
oSIST prEN 15542:2022
prEN 15542:2021 (E)
3.10
surface tissue
polymeric tissue in form of strip with a net-like structure, which is applied to the cement mortar layer
3.11
finishing layer
layer of synthetic resin compatible with zinc or zinc alloy
Note 1 to entry: The cement mortar coating layer can be applied on pipes with finishing layer.
3.12
minimum coating thickness
lower limit specified for the cement mortar coating thickness
3.13
impact strength
impact energy which a coating can withstand without damage under defined test conditions
3.14
adhesion
force per unit area, applied perpendicular to the surface, which is necessary to separate the coating
from its substrate
3.15
performance test
test which is done once and is repeated according to a schedule or after relevant change of raw material
supplier or relevant change in process application
3.16
routine test
test carried out to control the manufacturing process with a frequency defined by the manufacturer
4 Ordering information
The following information shall be supplied to the manufacturer by the purchaser:
Ductile iron pipes according to EN 545, EN 598 or EN 969, but coated with cement mortar coating by
reference to this document.
EXAMPLE 5 000 m of ductile iron pipe DN 300 according to EN 545; external cement mortar coating
according to EN 15542.
5 Technical requirements
5.1 Zinc or zinc alloy coating
The zinc or zinc alloy coating shall comply with the requirements specified in EN 545, EN 598 or
EN 969. The zinc or zinc alloy coating shall be dry and free from dirt, oil and grease.
5.2 Fresh cement mortar layer thickness
The nominal thickness of the fresh cement mortar layer shall be 5 mm with individual minimum values
of 3 mm when measured according to 7.1.2.
oSIST prEN 15542:2022
prEN 15542:2021 (E)
5.3 Pipe ends
The spigot shall be not covered by the cement mortar coating over a free length “a” (see Figure 1).

Figure 1 — spigot end
The uncoated spigot end length “a” depends on the type of joint. It is the responsibility of the
manufacturer to define the appropriate uncoated length for each type of joint.
Depending on the manufacturing process, it may be necessary that an area on the socket bell is not
coated with cement mortar. The front end of the socket bell may be uncoated free on a length “b” (see
Figure 2). The length “b” shall not be more than 40 mm.

Key
1 push in socket
Figure 2 — Socke
...