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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
Beryllium aluminum alloy
WITHDRAWN published on 10.1.2011
Selected format:Test method for carrier recombination lifetime in silicon wafers by non-contact measurement of photoconductivity decay by microwave reflectance
WITHDRAWN published on 10.1.2011
Selected format:Specification for silicon annealed wafers
WITHDRAWN published on 10.1.2011
Selected format:Silica refractory bricks for glass furnaces
WITHDRAWN published on 1.1.1987
Selected format:Mono-crystalline silicon as cut slices for photovoltaic solar cells
WITHDRAWN published on 10.1.2011
Selected format:Steel bars for sucker rods
WITHDRAWN published on 10.1.2011
Selected format:Metallic materials—Fatigue testing—Axial-strain-controlled method
WITHDRAWN published on 10.1.2011
Selected format:Silica refractory bricks
WITHDRAWN published on 1.1.1987
Selected format:Silica refractory bricks
WITHDRAWN published on 17.12.2001
Selected format:Silica refractory bricks
WITHDRAWN published on 5.11.2012
Selected format:Latest update: 2026-03-27 (Number of items: 2 269 573)
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