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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
Vitreous and porcelain enamels—Determination of resistance to condensing hydrochloric acid vapour
WITHDRAWN published on 16.6.2003
Selected format:Eyelet bolts
WITHDRAWN published on 24.6.1988
Selected format:The impact test method of glass-lined layer
WITHDRAWN published on 24.6.1987
Selected format:Impact test method of glass-lined layer
WITHDRAWN published on 29.5.2002
Selected format:Vitreous and porcelain enamels—Determination of resistance to impact
WITHDRAWN published on 31.12.2013
Selected format:Method for measuring the thickness of glass-lined layer by electro-magnetic meter
WITHDRAWN published on 24.6.1987
Selected format:Measurement of vitreous and porcelain enamel coating thickness—Magnetic method
WITHDRAWN published on 16.6.2003
Selected format:Test method of viterous and porcelain enamels—Part 10Determination of lead and cadmium release
WITHDRAWN published on 5.12.2014
Selected format:Test method of glass-lined equipment for service under corrosive conditions by high voltage
WITHDRAWN published on 24.6.1987
Selected format:Vitreous and porcelain enamel—Enamelled articles for service under highly corrosive conditions—High voltage test
WITHDRAWN published on 16.6.2003
Selected format:Latest update: 2025-07-11 (Number of items: 2 208 012)
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