GB/T 46978-2026 Active National standards

GB/T 46978-2026 Non-destructive testing—Methods of alternating current field measurement(ACFM) for metal structures

Publish Date: 2026-01-28 Implement Date: 2026-01-28 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 46978-2026

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods

ICS Name: Non-destructive testing

Publish Date: 2026-01-28

Implement Date: 2026-01-28

Pages: 28 pages

Scope

This document describes the method of detecting metal structures using AC electromagnetic field technology, and specifies the process procedures, detection systems, detection procedures, detection data and result evaluation, as well as detection reports for metal structures using AC electromagnetic field detection methods.
This document is applicable to the detection of surface and near-surface defects in metal structures with a non-conductive coating/covering layer thickness of less than 5 mm.