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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
Standard test method for Vickers hardness of glazed domestic ceramic ware
WITHDRAWN published on 1.1.1982
Selected format:Methods of determination and calculation of heat balance in regenerative burner for ladle preheating system of iron and steel industry
WITHDRAWN published on 29.8.2016
Selected format:Methods of determination and calculation of heat balance in regenerative furnace of iron and steel industry
WITHDRAWN published on 29.8.2016
Selected format:Standard test method for thermal shock resistance of domestic ceramic ware
WITHDRAWN published on 28.4.1991
Selected format:Standard test method for crazing resistance of domestic ceramic ware by a thermal shock method
WITHDRAWN published on 28.8.2008
Selected format:Thermal insulating products for building applications—Determination of compressive creep
WITHDRAWN published on 29.8.2016
Selected format:Standard test method for water absorption of domestic ceramic ware
WITHDRAWN published on 1.1.1982
Selected format:Standard test method for water absorption of domestic ceramic ware
WITHDRAWN published on 25.6.1996
Selected format:Surface chemical analysis—Analysis of metal oxide films by glow-discharge optical emission spectrometry
WITHDRAWN published on 13.10.2016
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WITHDRAWN published on 1.1.1977
Selected format:Latest update: 2026-01-23 (Number of items: 2 257 393)
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