introduction
ISO (International Organization for Standardization) is a global federation of national standards bodies (ISO member bodies). The development of international standards is usually carried out through ISO technical committees. Each member group interested in a subject for which a technical committee has been established has the right to be represented on the Committee. International organizations, governments and non-governmental organizations in contact with ISO are also involved in this work. ISO works closely with the International Electrotechnical Commission (IEC) on all matters of electrical standardization.

Part 1 of the ISO/IEC Directive describes the procedures used to develop this document and for further maintenance. In particular, attention should be paid to the different approval criteria required for different types of ISO documents. This document has been drafted in accordance with the editorial rules of ISO/IEC Directive Part 2 (see iso.org/directives).

ISO 14713-2-2019 – Guidelines and recommendations for the protection of steels against corrosion in zinc coated structures – Part 2: Hot dip galvanizing

Please note that some elements of this document may be the subject of patent rights. ISO is not responsible for identifying any or all such patents. Details of any patent rights identified during the development of the document will be found in the introduction and/or list of ISO Patent declarations received (see iso.org/patents).

Any trade names used in this document are provided as information for the convenience of the user and do not constitute an endorsement.

Voluntary interpretation, related standards and conformity assessment related ISO specific terminology and express the meaning of and the ISO in the technical barriers to trade (TBT) adhere to the principle of the world trade organization (WTO) information, please see the iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 107, Metal and Other Inorganic Coatings, Sub-Committee SC 4, Hot-Dip Coatings (Galvanizing, etc.).

The second edition cancels and replaces the first edition (ISO 14713-2:2009), which has been technically revised. The main changes compared with the previous edition are as follows:

ISO 14713-2-2019 – Guidelines and recommendations for the protection of steels against corrosion in zinc coated structures – Part 2: Hot dip galvanizing

Minor technical changes have been made and two new comments have been added to Table 1.

– Improved clarity of the recommendations in article 6;

– Substantial changes to the figures in Appendix A;

Tables A.1, A.2 and A.3 have been added to Appendix A.

A list of all the parts in the ISO 14713 series can be found on the ISO website.

Any feedback or questions on this document should be referred to the user’s national standards body. A complete list of these institutions can be found at iso.org/members.html.

ISO 14713-2-2019 – Guidelines and recommendations for the protection of steels against corrosion in zinc coated structures – Part 2: Hot dip galvanizing

introduce
The protection of hot-dip galvanized coating on the product depends on the application method of the coating, the design of the product and the specific environment to which the product is exposed. Hot-dip galvanized articles may be further protected by the application of additional coatings (outside the scope of this document), such as organic coatings (paints or powder coatings). When applied to hot-dip galvanized products, this coating combination is often referred to as a “two-phase system.”

There may be specific product-related requirements for specific standards (e.g., hot-dip galvanizing coatings on pipes or fasteners) that take precedence over these general recommendations.

1 Scope of Application
This document gives guidance and recommendations on general design principles applicable to post-manufacturing hot-dip galvanized articles (e.g., according to ISO 1461) in case of corrosion, e.g., articles manufactured according to EN 1090- 2.

This document does not apply to hot-dip galvanizing coatings applied to continuous wires or plates (e.g. EN 10346).

2 Normative reference documents
When the following documents are referenced in the text, some or all of them constitute the requirements of this document. For dated references, only the cited version applies. For undated citations, a new version of the referenced document (including any revisions) applies.

ISO 8044, Corrosion of metals and alloys – Basic terms and definitions

ISO 14713-2-2019 – Guidelines and recommendations for the protection of steels against corrosion in zinc coated structures – Part 2: Hot dip galvanizing

3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 8044 and the following apply.

ISO and IEC maintain terminology databases for standardization at the following addresses:

– ISO online browsing platform: iso.org/obp

– IEC Electropedia: available at electropedia.org/

3.1 Hot Dip Galvanizing

A zinc and/or zinc-iron alloy coating is formed on steel products by dipping prepared steel or cast iron into a zinc melt

3.2 Hot dip galvanized coating

Coatings obtained by hot dip galvanizing (3.1)

Note 1: The term “hot-dip galvanizing layer” is hereinafter referred to as “coating”.

3.3 Duplex System

Hot-dip galvanizing coating (3.2) with additional paint or powder coating

Only the standard information section is public. To see the full content, you need to purchase the standard through the official channels.