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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
Refined cotton
Standard published on 23.5.2023
Selected format:Dynamic measurement of petroleum and liquid petroleum products—Part 1: General principls
Standard published on 30.12.2016
Selected format:Dynamic measurement of petroleum and liquid petroleum productsPart 2: Technical requirements of meter installation
Standard published on 19.2.2014
Selected format:Dynamic measurement of petroleum and liquid petroleum productsPart 3: Technical requirements of installation for pipe prover
Standard published on 19.2.2014
Selected format:Dynamic measurement of petroleum and liquid petroleum products—Part 5:Calculation of oil quantities
Standard published on 5.10.2025
Selected format:Crude oil vertical metal tank measurement--Method of calculation of quantities
Standard published on 22.4.1988
Selected format:The methods of mulberry silkworm dried cocoons
Standard published on 11.9.2015
Selected format:Steel pipe flanges—Part 1PN designated
Standard published on 10.5.2019
Selected format:Steel pipe flanges—Part 2: Class designated
Standard published on 10.5.2019
Selected format:Fasteners for pipe flange joints
Standard published on 10.1.2011
Selected format:Latest update: 2026-07-26 (Number of items: 2 290 396)
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