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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
Heat sinks for power semiconductor devices—Part 3: Insulators and fasteners
Standard published on 9.3.2022
Selected format:Industrial linear alkylbenzene sulfonic acid
Standard published on 30.12.2008
Selected format:Cross-recessed pan head tapping screws
Standard published on 12.7.2017
Selected format:Glass bottles—Test method for verticality
Standard published on 31.10.2025
Selected format:Reduced ilmenite powder for welding rob—Determination of ferrous iron content—Potassium dichromate titrimetric method
Standard published on 2.6.2020
Selected format:Textile machinery—Knitting machines—Nominal diameters of circular machines
Standard published on 30.5.2025
Selected format:Textile machinery and accessories--Knitting machines--Number of needles for circular knitting machines of large nominal diameter
Standard published on 10.2.2003
Selected format:Textile machinery and accessories--Pitches of knitting machine needles
Standard published on 10.2.2003
Selected format:Cross-recessed countersunk (flat) head tapping screws
Standard published on 12.7.2017
Selected format:Textile machineryand accessories--Cone sectional warping machines--Maximum usable width
Standard published on 10.2.2003
Selected format:Latest update: 2026-06-12 (Number of items: 2 281 969)
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