GB/T 26953-2025 Active National standards

GB/T 26953-2025 Non-destructive testing of welds—Penetrant testing—Acceptance levels

Publish Date: 2025-10-31 Implement Date: 2026-02-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 26953-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Welding and cutting

ICS Name: \nWelding joints

Publish Date: 2025-10-31

Implement Date: 2026-02-01

Pages: 12 pages

Scope

This document specifies the requirements for the acceptance level of penetration testing for surface open defects in metal welds.
The acceptance levels specified in this document are primarily used for testing during the manufacturing phase, but can also be used for in-service testing under appropriate circumstances.
The acceptance levels specified in this document are based on the detection capability expected to be achieved when the technical specifications of the ISO 3452 series of standards and the parameters recommended in Appendix A are met. The acceptance levels are related to welding documents, application documents, technical specifications, or regulations, etc. The relationship between the acceptance levels and ISO 5817 or ISO 10042 is described in ISO 17635.
This document does not specify the acceptance levels for group display.