Announcement of the Ministry of Housing and Urban-Rural Development on the release of the industry standard "Technical Regulations for Detecting Concrete Defects by Impact Echo Method"
The "Technical Specification for Detecting Concrete Defects by Impact Echo Method" is now approved as the industry standard, numbered JGJ / T411-2017, and will be implemented as of November 1, 2017.
This regulation is published by the China Construction Industry Press organized by the Standard Quota Research Institute of our Ministry.
Ministry of Housing and Urban-Rural Development of the People's Republic of China
May 18, 2017
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