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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
Sampling procedures for inspection by variables—Part 5: Sequential sampling plans indexed by acceptance quality limit (AQL) for inspection by variables (known standard deviation)
Standard published on 31.12.2025
Selected format:Sampling procedures for inspection by variables—Part 7: Procedures for assessment of declared quality levels for percent nonconforming
Standard published on 29.9.2024
Selected format:Accuracy(trueness and precision)of measurement methods and results--Part 1:General principles and definitions
Standard published on 2.6.2004
Selected format:Accuracy(trueness and precision)of measurement methods and results--Part 2:Basic method for the determination of repeatability and reproducibility of a standard measurement method
Standard published on 2.6.2004
Selected format:Accuracy(trueness and precision) of measurement methods and results - Part 3Intermediate measures of the precision of a standard measurement method
Standard published on 5.11.2012
Selected format:Accuracy (trueness and precision) of measurement methods and results—Part 4:Basic methods for the determination of the trueness of a standard measurement method
Standard published on 31.12.2025
Selected format:Accuracy(trueness and precision) of measurement methods and results -Part 5: Alternative methods for the determination of the precision of a standard measurement method
Standard published on 13.11.2006
Selected format:Accuracy(trueness and precision) of measurement methods and results - Part 6: Use in practice of accuracy values
Standard published on 13.3.2009
Selected format:Chemical reagent—Stannous chloride dihydrate
Standard published on 7.6.2018
Selected format:Statistical interpretation of data—Detection and treatment of outliers in the sample from typeextreme value distribution
Standard published on 10.12.2019
Selected format:Latest update: 2026-08-09 (Number of items: 2 292 444)
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