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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
Determination of magnesium oxide content in tin concentrates--Xylidyl blue photometric method
WITHDRAWN published on 29.12.1979
Selected format:Agricultural vehicles—Safety requirements
WITHDRAWN published on 21.3.2001
Selected format:Limits for smoke at free acceleration from agricultural vehicles
WITHDRAWN published on 21.3.2001
Selected format:Plain bearings—Sintered bushes—Dimensions and tolerances
WITHDRAWN published on 26.2.2001
Selected format:Plain bearings—Multilayer materials for thin-walled plain bearings
WITHDRAWN published on 26.2.2001
Selected format:Plain bearings--Basic symbols
WITHDRAWN published on 26.2.2001
Selected format:Plain bearings—Applications
WITHDRAWN published on 26.2.2001
Selected format:Plain bearings—Non-destructive ultrasonic testing of bond for metallic multilayer plain bearings
WITHDRAWN published on 26.2.2001
Selected format:Determination of calcium oxide content in tin concentrates--EDTA volumetric method
WITHDRAWN published on 29.12.1979
Selected format:Plain bearings—Measurement of wall thickness of thin-walled half-bearings and thin-walled bushes
WITHDRAWN published on 26.2.2001
Selected format:Latest update: 2025-12-26 (Number of items: 2 253 153)
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