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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
Flow measurement calibration facility—Pipe prover
WITHDRAWN published on 30.11.1991
Selected format:Accuracy class of measuring instruments and display instruments for industrial process measurement and control
WITHDRAWN published on 30.11.1991
Selected format:Criteria for safety systems for nuclear power plants
WITHDRAWN published on 17.11.1998
Selected format:The safety systems for nuclear power plants - Part 1: Design criteria
WITHDRAWN published on 24.3.2008
Selected format:Criteria for independence of class 1E equipment and circuits in nuclear power plants
WITHDRAWN published on 1.1.1991
Selected format:Criteria for independence of class IE equipment and circuits in nuclear power plants
WITHDRAWN published on 24.10.2001
Selected format:Criteria for independence of class 1E equipment and circuits in nuclear power plants
WITHDRAWN published on 18.7.2008
Selected format:The assessment of profile grades of steel surface before application of paint and related products—Comparator
WITHDRAWN published on 13.12.1991
Selected format:Ethylene for industrial use—Sampling in the liquid and the gaseous phase
WITHDRAWN published on 9.12.1991
Selected format:Coating for optical element--Neutral-filter coating
WITHDRAWN published on 1.1.1989
Selected format:Latest update: 2026-01-22 (Number of items: 2 257 357)
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