GB/T 20935-2025 Active National standards

GB/T 20935-2025 Metal materials—Method of electromagnetic acoustic inspection

Publish Date: 2025-08-29 Implement Date: 2026-03-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 20935-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Non-destructive testing methods for metals

ICS Name: Nondestructive testing of metal materials

Publish Date: 2025-08-29

Implement Date: 2026-03-01

Publisher: 国家市场监督管理总局、国家标准化管理委员会

Technical Committee: 全国钢标准化技术委员会(SAC/TC 183)

Pages: 24 pages

Scope

本文件规定了使用电磁超声换能器（EMAT）进行超声检测的检测原理、一般要求、检测设备、试样、检测方法、结果判定和检测报告。
本文件适用于由电磁方法产生声波的材料（包括铁磁性或非铁磁性金属材料）的厚度测量和表面检测，其他波型的检测参照本文件执行。

Development Information

Drafting Units:

钢研纳克检测技术股份有限公司、武汉中科创新技术股份有限公司、衡阳华菱钢管有限公司、西南交通大学、国家石油天然气管网集团有限公司西北分公司、嘉兴市特种设备检验检测院、江苏大洋精锻有限公司、广东省特种设备检测研究院、冶金工业信息标准研究院

Drafting Persons:

张建卫、林光辉、刘继林、苟国庆、许琛琛、杨建华、宋银生、李绪丰、王永锋、韩志雄、张黎、靳军军、王彬彬、罗伟坚、刘光磊、金耀辉、方华军、陈兵、王磊、杨博、邱菲菲、刘涛、郭沫呈、张广新、罗春浪、夏鹏、徐磊、范弘、薛建忠、郭碧城

Word Count: 35 Thousand words Pages: 24 pages

Replace the following standards

GB/T 20935.1-2018 Metal materials—Method of electromagnetic acoustic inspection—Part 1:Standard guide for electromagnetic acoustic transducers(EMATs) GB/T 20935.2-2018 Metal materials—Method of electromagnetic acoustic inspection—Part 2:Standard practice for ultrasonic testing using electromagnetic acoustic transducer(EMAT)techniques GB/T 20935.3-2018 Metal materials—Method of electromagnetic acoustic inspection—Part 3:Standard practice for ultrasonic surface examinations using electromagnetic acoustic transducer(EMAT)techniques

Referenced Standards

Related Standards

GB/T 2971-1982 Abolished

GB/T 2971-1982 Method of fracture test for carbon and low alloy steels

Publish Date: 1982-03-25

GB/T 5193-1985 Replaced

GB/T 5193-1985 Method of ultrasonic inspection for wrought titanium and titanium alloys products

Publish Date: 1985-05-18

GB/T 5616-1985 Replaced

GB/T 5616-1985 Guidlines for application of conventional nondestructive testing methods

Publish Date: 1985-11-25

GB/T 5677-1985 Replaced

GB/T 5677-1985 Methods of radiographic testing and classification of radiographs for steel castings

Publish Date: 1985-12-04

GB/T 5778-1986 abolished_transferred

GB/T 5778-1986 Determination of hermeticity of expansion alloys

Publish Date: 1986-01-14

GB/T 7233-1987 Replaced

GB/T 7233-1987 Methods for ultrasonic testing and for specifying quality levels of steel castings

Publish Date: 1987-02-04