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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
Methods for chemical analysis of ferrochromium and silicochromium—The potentiometric titration method for the determination of chromium content
WITHDRAWN published on 30.12.1988
Selected format:Refractory products--Definitions of model
WITHDRAWN published on 1.1.1988
Selected format:Refractory products--Instructions on stacking, sampling, acceptance, storage and transporting
WITHDRAWN published on 1.1.1988
Selected format:Shaped refractory products—Sampling and acceptance testing
WITHDRAWN published on 17.12.2001
Selected format:Refractory products--Inspections of dimension, appearance and section
WITHDRAWN published on 1.1.1988
Selected format:Refractory products—Inspections of dimension appearance and section
WITHDRAWN published on 17.12.2001
Selected format:Reference fuel specification for diesel engine performance test
WITHDRAWN published on 13.1.1989
Selected format:Reference fuel specification for diesel engine performance test
WITHDRAWN published on 29.7.2011
Selected format:Hygienic standard for graphite dust in the air of workplace
WITHDRAWN published on 27.2.1989
Selected format:Hygienic standard for fur dust in the air of workplace
WITHDRAWN published on 27.2.1989
Selected format:Latest update: 2026-05-13 (Number of items: 2 276 848)
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