EN ISO 12944-4:2017

Paints and varnishes - Corrosion protection of steel structures by protective paint systems - Part 4: Types of surface and surface preparation (ISO 12944-4:2017)

ISO 12944-4:2017 covers the following types of surfaces of steel structures consisting of carbon or low-alloy steel, and their preparation:
-      uncoated surfaces;
-      surfaces thermally sprayed with zinc, aluminium or their alloys;
-      hot-dip-galvanized surfaces;
-      zinc-electroplated surfaces;
-      sherardized surfaces;
-      surfaces painted with prefabrication primer;
-      other painted surfaces.
ISO 12944-4:2017 defines a number of surface preparation grades but does not specify any requirements for the condition of the substrate prior to surface preparation.
Highly polished surfaces and work-hardened surfaces are not covered by ISO 12944-4:2017.

Beschichtungsstoffe - Korrosionsschutz von Stahlbauten durch Beschichtungssysteme - Teil 4: Arten von Oberflächen und Oberflächenvorbereitung (ISO 12944-4:2017)

In diesem Dokument werden die folgenden Oberflächenarten von Stahlbauten aus unlegiertem oder niedriglegiertem Stahl und deren Vorbereitung behandelt:
—   unbeschichtete Oberflächen;
—   thermisch gespritzte Oberflächen mit Zink, Aluminium oder Legierungen daraus;
—   feuerverzinkte Oberflächen;
—   galvanisch verzinkte Oberflächen;
—   sherardisierte Oberflächen;
—   Oberflächen mit Fertigungsbeschichtungen;
—   andere beschichtete Oberflächen.
In diesem Dokument werden eine Reihe von Oberflächenvorbereitungsgraden festgelegt, jedoch keine Anforderungen an den Zustand des Untergrunds vor der Oberflächenvorbereitung.
Hochpolierte und kaltverfestigte Oberflächen werden in diesem Dokument nicht behandelt.

Peintures et vernis - Anticorrosion des structures en acier par systèmes de peinture - Partie 4: Types de surface et de préparation de surface (ISO 12944-4:2017)

ISO 12944-4:2017 traite des types suivants de surfaces des structures en acier au carbone et faiblement allié et de leur préparation:
-      surfaces non revêtues;
-      surfaces revêtues par projection à chaud de zinc, d'aluminium ou de leurs alliages;
-      surfaces galvanisées au trempé à chaud;
-      surfaces électrozinguées;
-      surfaces shérardisées;
-      surfaces revêtues d'un primaire de préfabrication;
-      autres surfaces peintes.
ISO 12944-4:2017 définit un nombre de degrés de préparation de surface mais ne spécifie aucune exigence relative à l'état du subjectile avant la préparation de surface.
ISO 12944-4:2017 ne couvre pas les surfaces fortement polies ni les surfaces écrouies.

Barve in laki - Protikorozijska zaščita jeklenih konstrukcij z zaščitnimi premaznimi sistemi - 4. del: Vrste površine in priprava površine (ISO 12944-4:2017)

Ta dokument zajema naslednje vrste površin jeklenih konstrukcij iz ogljika ali nizko legiranega
jekla in njihove priprave:
– nepremazane površine;
– površine, ki so toplotno obdelane s cinkom, aluminijem ali njunimi zlitinami;
– vroče galvanizirane površine;
– s cinkom galvanizirane površine;
– šeradirane površine;
– površine, premazane z osnovnim premazom;
– druge premazane površine.
V tem dokumentu so opredeljene številne stopnje priprave površine, vendar niso določene nobene zahteve
za stanje podloge pred pripravo površine.
Ta dokument ne zajema intenzivno poliranih površin in utrjenih delovnih površin.

General Information

• Status: Published
• Publication Date: 19-Dec-2017
• Withdrawal Date: 29-Jun-2018
• ICS: 25.220.10 - Surface preparation
• ICS: 87.020 - Paint coating processes
• ICS: 91.080.10 - Metal structures
• ICS: 91.080.13 - Steel structures
• Technical Committee: CEN/TC 139 - Paints and varnishes
• Drafting Committee: CEN/TC 139 - Paints and varnishes
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 20-Dec-2017
• Completion Date: 20-Dec-2017
• Ref Project: SIST EN ISO 12944-4:2018 - Paints and varnishes - Corrosion protection of steel structures by protective paint systems - Part 4: Types of surface and surface preparation (ISO 12944-4:2017)

Relations

• Replaces: EN ISO 12944-4:1998 - Paints and varnishes - Corrosion protection of steel structures by protective paint systems - Part 4: Types of surface and surface preparation (ISO 12944-4:1998)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-2018
1DGRPHãþD
SIST EN ISO 12944-4:1998
%DUYHLQODNL3URWLNRUR]LMVND]DãþLWDMHNOHQLKNRQVWUXNFLM]]DãþLWQLPLSUHPD]QLPL
VLVWHPLGHO9UVWHSRYUãLQHLQSULSUDYDSRYUãLQH,62
Paints and varnishes - Corrosion protection of steel structures by protective paint
systems - Part 4: Types of surface and surface preparation (ISO 12944-4:2017)
Beschichtungsstoffe - Korrosionsschutz von Stahlbauten durch Beschichtungssysteme -
Teil 4: Arten von Oberflächen und Oberflächenvorbereitung (ISO 12944-4:2017)
Peintures et vernis - Anticorrosion des structures en acier par systèmes de peinture -
Partie 4: Types de surface et de préparation de surface (ISO 12944-4:2017)
Ta slovenski standard je istoveten z: EN ISO 12944-4:2017
ICS:
25.220.10 Priprava površine Surface preparation
87.040 Barve in laki Paints and varnishes
91.080.13 Jeklene konstrukcije Steel structures
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 12944-4
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2017
EUROPÄISCHE NORM
ICS 25.220.10; 87.020; 91.080.13 Supersedes EN ISO 12944-4:1998
English Version
Paints and varnishes - Corrosion protection of steel
structures by protective paint systems - Part 4: Types of
surface and surface preparation (ISO 12944-4:2017)
Peintures et vernis - Anticorrosion des structures en Beschichtungsstoffe - Korrosionsschutz von
acier par systèmes de peinture - Partie 4: Types de Stahlbauten durch Beschichtungssysteme - Teil 4:
surface et de préparation de surface (ISO 12944- Arten von Oberflächen und Oberflächenvorbereitung
4:2017) (ISO 12944-4:2017)
This European Standard was approved by CEN on 30 October 2017.

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 CEN-CENELEC Management Centre 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 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12944-4:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
European foreword
This document (EN ISO 12944-4:2017) has been prepared by Technical Committee ISO/TC 35 “Paints
and varnishes” in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” the
secretariat of which is held by DIN.
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 2018, and conflicting national standards shall be
withdrawn at the latest by June 2018.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 12944-4:1998.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 12944-4:2017 has been approved by CEN as EN ISO 12944-4:2017 without any
modification.
INTERNATIONAL ISO
STANDARD 12944-4
Second edition
2017-11
Paints and varnishes — Corrosion
protection of steel structures by
protective paint systems —
Part 4:
Types of surface and surface
preparation
Peintures et vernis — Anticorrosion des structures en acier par
systèmes de peinture —
Partie 4: Types de surface et de préparation de surface
Reference number
ISO 12944-4:2017(E)
©
ISO 2017
ISO 12944-4:2017(E)
© ISO 2017, 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
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ii © ISO 2017 – All rights reserved

ISO 12944-4:2017(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 General . 4
5 Types of surface to be prepared . 4
5.1 General . 4
5.2 Uncoated surfaces . 4
5.3 Metal-coated surfaces . 4
5.3.1 Thermally sprayed surfaces . 4
5.3.2 Hot-dip-galvanized surfaces . 4
5.3.3 Zinc-electroplated surfaces . 4
5.3.4 Sherardized surfaces . 5
5.4 Surfaces painted with prefabrication primer . 5
5.5 Other painted surfaces . 5
5.6 Surfaces with chemical treatment . 5
6 Surface preparation methods . 5
6.1 General . 5
6.2 Water, solvent and chemical cleaning. 5
6.2.1 Water cleaning . 5
6.2.2 Steam cleaning . 5
6.2.3 Emulsion cleaning . . . 6
6.2.4 Alkaline cleaning . 6
6.2.5 Organic-solvent cleaning . 6
6.2.6 Stripping. 6
6.2.7 Acid pickling . 6
6.2.8 Chemical treatment . 6
6.3 Mechanical cleaning . 6
6.3.1 Hand-tool cleaning . 6
6.3.2 Power-tool cleaning . 6
6.3.3 Blast-cleaning . 7
6.3.4 Water jetting . 8
7 Surface preparation grades . 8
7.1 General . 8
7.2 Uncoated surfaces . 9
7.3 Metal-coated surfaces . 9
7.4 Surfaces painted with prefabrication primer . 9
7.5 Other painted surfaces . 9
8 Surface profile (roughness) and surface profile grading .10
9 Assessment of prepared surfaces .10
10 Temporary protection of prepared surfaces from corrosion and/or contamination .10
11 Preparation of temporarily or partly protected surfaces before application of
further coatings .10
12 Preparation
...