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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—The infrared absorption method for the determination of sulfur content
WITHDRAWN published on 21.2.1988
Selected format:Methods for chemical analysis of ferrochromium—The combustion-neutralization titration method for the determination of sulfur content
WITHDRAWN published on 21.2.1988
Selected format:Reduced ilmenite powders for welding electrodes
WITHDRAWN published on 1.1.1985
Selected format:The general rules for packing, marking and certification of metallurgical mine products
WITHDRAWN published on 1.1.1985
Selected format:Marine pipe flanges--Connection dimensions and mating face
WITHDRAWN published on 16.7.1965
Selected format:Fluor-spar concentrate
WITHDRAWN published on 1.1.1985
Selected format:A modular instrumentation system for data handling;CAMAC system
WITHDRAWN published on 4.12.1985
Selected format:Definitions of CAMAC terms
WITHDRAWN published on 26.11.1985
Selected format:CAMAC organization of multi-crate systems specification of the branch-highway and CAMAC crate controller type A1
WITHDRAWN published on 26.11.1985
Selected format:Block transfers in CAMAC systems
WITHDRAWN published on 26.11.1985
Selected format:Latest update: 2026-05-04 (Number of items: 2 275 493)
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