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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
Test methods of the concrete compressive strength of concrete pipes for water
WITHDRAWN published on 30.11.1989
Selected format:Steam corrosion testing of uranium dioxide pellets
WITHDRAWN published on 21.10.1989
Selected format:Determination of boron in uranium dioxide pellets--The curcumin extraction--Spectrophotometric method
WITHDRAWN published on 21.10.1989
Selected format:Tolerances of form and of position--Tolerance
WITHDRAWN published on 1.1.1980
Selected format:Determination of oxygen to uranium atomic ratic in uranium dioxide powder and pellets by thermogravimetric method
WITHDRAWN published on 21.10.1989
Selected format:Uranium dioxide powder and pellets--Determination of nitrogen--Spectrophotometric method
WITHDRAWN published on 21.10.1989
Selected format:Uranium dioxide powder and pellets—Determination of fluorine-Pyrohydrolysis ion-selective electrode method
WITHDRAWN published on 21.10.1989
Selected format:Uranium dioxide powder and pellets--Determination of tungsten--Spectrophotometric method
WITHDRAWN published on 21.10.1989
Selected format:Uranium dioxide powder and pellets—Determination of silicon—Spectrophotometric method
WITHDRAWN published on 21.10.1989
Selected format:Determination of specific surface area of uranium dioxide powder by multipoint BET method
WITHDRAWN published on 21.10.1989
Selected format:Latest update: 2025-11-12 (Number of items: 2 243 625)
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