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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
Power transformers—Part 5:Ability to withstand short circuit
Standard published on 19.9.2008
Selected format:Power transformers—Part 6:Reactors
Standard published on 29.7.2011
Selected format:Power transformers—Part 7: Loading guide for mineral-oil-immersed power transformers
Standard published on 28.11.2024
Selected format:Reciprocation type grass cutter
Standard published on 3.6.2008
Selected format:Refrigerated bulk milk tanks
Standard published on 29.9.2017
Selected format:Tool shanks with 7/24 taper for automatic tool changersPart 1Dimensions and designation of shanks of forms AADAFUUD and UF
Standard published on 31.12.2013
Selected format:Tool shanks with 7/24 taper for automatic tool changers—Part 2Dimensions and designation of shanks of forms JJD and JF
Standard published on 31.12.2013
Selected format:Tool shanks with 7/24 taper for automatic tool changersPart 3:Retention knobs for shanks of forms AC, AD, AF, UC, UD, UF,JD and JF
Standard published on 31.12.2013
Selected format:Tool shanks with 7/24 taper for automatic tool changers—Part 4: Technical specifications for shanks
Standard published on 31.12.2013
Selected format:Tool shanks with 7/24 taper for automatic tool changersPart 5: Technical specifications of Retention knobs
Standard published on 31.12.2013
Selected format:Latest update: 2025-08-25 (Number of items: 2 213 294)
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