Foreword

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This document was prepared by Technical Committee ISO/TC 135, Non-destructive testing, Subcommittee SC 3, Ultrasonic testing, in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 138, Non-destructive testing, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This third edition cancels and replaces the second edition (ISO 16809:2017), which has been technically revised.

The main changes are as follows:

— terminology in the document has been modified, changing "measurement" to "determination";
— terminology has been aligned with ISO 16831;
— ultrasonic instruments with A-scan presentation that conform with ISO 22232-1 can be used to determine wall thicknesses;
— all figures have been improved.

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.

ISO 16809:2025

Non-destructive testing. Ultrasonic thickness determination

Current

Published:

13 Jun 2025