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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
Representation of results of particle size analysis - Part 2: Calculation of average particle sizes/diameters and moments from particle size distributions
Standard published on 5.2.2006
Selected format:
Representation of results of particle size analysis—Part 3:Adjustment of an experimental curve to a reference model
Execute Date: july 2026
Standard published on 2.12.2025
Selected format:Representation of results of particle size analysis - Part 4: Characterization of a classification process
Standard published on 5.2.2006
Selected format:Representation of results of particle size analysis - Part 5: Methods of calculations relating to particle size analyses using logarithmic normal probability distribution
Standard published on 16.6.2011
Selected format:Representation of results of particle size analysis—Part 6: Descriptive and quantitative representation of particle shape and morphology
Standard published on 22.12.2014
Selected format:Terminology relating to radiation processing dosimetry
Standard published on 2.7.2008
Selected format:Conversion method of absorbed doses in different materials irradiated by X, rays and election beams
Standard published on 19.9.2008
Selected format:Fixed capacitors for use in electronic equipment—Part 19: Sectional specification—Fixed metallized polyethylene-terephthalate film dielectric surface mount d.c.capacitors
Standard published on 31.12.2013
Selected format:Blank detail-specification for field-effect transistors for case-rated switching application
Standard published on 5.1.1995
Selected format:Paper, board and pulp - Determination of acidity or alkalinity
Standard published on 19.8.2008
Selected format:Latest update: 2026-06-12 (Number of items: 2 281 969)
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