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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
Laboratory pH meter
WITHDRAWN published on 31.3.1989
Selected format:Specifications of thermomagnetic oxygen analyzers
WITHDRAWN published on 1.1.1989
Selected format:Image quality of optical systems--Method of deter-mination
WITHDRAWN published on 31.3.1989
Selected format:Specifications of zirconia oxygen analyzers
WITHDRAWN published on 1.1.1989
Selected format:-
WITHDRAWN published on 1.1.1985
Selected format:Side and face milling cutter with straight teeth
WITHDRAWN published on 6.12.1973
Selected format:Method for photoelectric emission spectroscopic analysis of stainless steel
WITHDRAWN published on 31.3.1989
Selected format:Alloy structure steel blank for making seamless tube
WITHDRAWN published on 1.1.1989
Selected format:Quality carbon steel seamless tube blank
WITHDRAWN published on 1.1.1989
Selected format:Circular saw blade for hot metal cut
WITHDRAWN published on 1.1.1989
Selected format:Latest update: 2026-04-01 (Number of items: 2 270 267)
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