ISO 2426-2:2020

INTERNATIONAL ISO
STANDARD 2426-2
Second edition
2020-04
Plywood — Classification by surface
appearance —
Part 2:
Hardwood
Contreplaqué — Classification selon l'aspect des faces —
Partie 2: Bois feuillus
Reference number
ISO 2426-2:2020(E)
©
ISO 2020

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ISO 2426-2:2020(E)

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ii © ISO 2020 – All rights reserved

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ISO 2426-2:2020(E)

Contents  Page
Foreword .iv
1  Scope . 1
2  Normative reference . 1
3  Terms and definitions . 1
4  Classification by surface appearance . 1
4.1 Appearance classes . 1
4.2 Permissible characteristics and defects . 1
4.2.1 General. 1
4.2.2 Characteristics inherent in wood . 2
4.2.3 Manufacturing defects . 3
Bibliography . 5
© ISO 2020 – All rights reserved iii

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ISO 2426-2:2020(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 89, Wood-based panels, Subcommittee
SC 3, Plywood.
This second edition cancels and replaces the first edition (ISO 2426-2:2000), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— It is precised that hardwood species includes tropical and temperate hardwood.
A list of all parts in the ISO 2426 series can be found on the ISO website.
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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INTERNATIONAL STANDARD ISO 2426-2:2020(E)
Plywood — Classification by surface appearance —
Part 2:
Hardwood
1  Scope
This document specifies the nature and limits of characteristics inherent in wood and manufacturing
defects enabling the visual assessment of the plywood for allocation to an appearance class.
1)
This document applies to plywood, the surface veneers of which are made from hardwood
...