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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
Basic tooth profile of cylindrical worm
Standard published on 14.5.2018
Selected format:Module and diameter of cylindrical worm
Standard published on 14.5.2018
Selected format:Accuracy of cylindrical worm and wormwheel
Standard published on 14.5.2018
Selected format:Tabular layouts of article characteristics--Definitions and principles
Standard published on 21.6.1995
Selected format:Statistical interpretation of data - Multiple comparison for test results
Standard published on 15.10.2009
Selected format:Probabilistic limit states design(Normal-Normal mode)
Standard published on 15.10.2009
Selected format:The confidence limits of quantile and coefficient of variation for normal distribution
Standard published on 15.10.2009
Selected format:Cylindrical gears—ISO system of flank tolerance classification—Part 1:Definitions and allowable values of deviations relevant to flanks of gear teeth
Standard published on 12.10.2022
Selected format:Cylindrical gears—ISO system of flank tolerance classification—Part 2: Definitions and allowable values of double flank radial composite deviations
Standard published on 6.8.2023
Selected format:Accuracy of rack
Standard published on 12.10.2022
Selected format:Latest update: 2024-07-26 (Number of items: 2 339 085)
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