Standard No.:	GB/T 26952-2011
English Name:	Non-destructive testing of welds - Magnetic particle testing of welds - Acceptance levels
Chinese Name:	焊缝无损检测 焊缝磁粉检测 验收等级
Chinese Classification:	J33    Welding and cutting
Professional Classification:	GB    National Standard
ICS Classification:	25.160.40 25.160.40    Welded joints and welds 25.160.40
Source Content Issued by:	AQSIQ; SAC
Issued on:	2011-9-29
Implemented on:	2012-3-1
Status:	superseded
Superseded by:	GB/T 26952-2025 Non-destructive testing of welds - Magnetic particle testing - Acceptance levels
Superseded on:	2026-2-1
Abolished on:	2026-02-01
Target Language:	English
File Format:	PDF
Word Count:	3500 words
Translation Price(USD):	70.0
Delivery:	via email in 1 business day

1 Scope This standard specifies acceptance level of magnetic particle testing indication for imperfections in ferromagnetic steel weld. This acceptance level is mainly used for manufacturing inspection. If appropriate, it may also be used for in-service inspection. The acceptance levels in this standard are based on testing capability that can be expected by adopting the method specified in GB/T 26951 and the parameters recommended in Annex A. The acceptance levels are related to welding standards, application standards, technical conditions or laws and regulations. More information about acceptance level of indication can be found in product or application standards. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 12604.5 Non-destructive Testing - Terminology - Terms Used in Magnetic Particle Testing GB/T 20737 Non-destructive Testing - General Terms and Definitions (GB/T 20737-2006, ISO/TS 18173: 2005, IDT) GB/T 26951 Non-destructive Testing of Welds - Magnetic Particle Testing (GB/T 26951-2011, ISO 17638: 2003, MOD)

Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 Testing Parameters 5 Acceptance Level Annex A (Informative) Recommended Testing Parameters