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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
Methods for chemical analysisof sodium fluoride--The gravimetric method for the determination of waterinsoluble matter
WITHDRAWN published on 10.8.1987
Selected format:Methods for chemical analysis of sodium fluoride--The turbidimetric method for the determination of chloride content
WITHDRAWN published on 10.8.1987
Selected format:Mine filter self rescuer for carbon monoxide
WITHDRAWN published on 14.8.1987
Selected format:Mines filter self-rescuer for carbon monoxide
WITHDRAWN published on 16.6.2011
Selected format:Test methods of mine filter self rescuer for carbon monoxide
WITHDRAWN published on 14.8.1987
Selected format:Hygienic standard for beryllium in drinking water sources
WITHDRAWN published on 24.7.1987
Selected format:Seamless steel tubes for structural purposes
WITHDRAWN published on 1.11.1999
Selected format:Seamless steel tubes for structural purposes
WITHDRAWN published on 19.8.2008
Selected format:Seamless steel tubes for liquid service
WITHDRAWN published on 1.11.1999
Selected format:Seamless steel tubes for liquid service
WITHDRAWN published on 19.8.2008
Selected format:Latest update: 2025-06-30 (Number of items: 2 206 311)
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