GB/T 29712-2023: Non-destructive testing of welds - Ultrasonic testing - Acceptance levels

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Scope

This Document specifies two ultrasonic acceptance levels known as acceptance level 2 (AL 2)
and acceptance level 3 (AL 3) for full penetration welded joints in ferritic steels, which
correspond to ISO 5817.2014, quality levels B and C. An acceptance level corresponding to
ISO 5817.2014, quality level D is not included in this document, as ultrasonic testing is
generally not requested for this weld quality.

Basic Data

Standard ID	GB/T 29712-2023 (GB/T29712-2023)
Description (Translated English)	Non-destructive testing of welds - Ultrasonic testing - Acceptance levels
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J33
Classification of International Standard	25.160.40
Word Count Estimation	22,227
Date of Issue	2023-11-27
Date of Implementation	2024-06-01
Older Standard (superseded by this standard)	GB/T 29712-2013
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration