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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
Cross recessed countersunk head tapping screws
WITHDRAWN published on 1.8.1985
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WITHDRAWN published on 1.1.1987
Selected format:Textile machinery--Cone sectional warping machines--Maximum usable width
WITHDRAWN published on 1.1.1987
Selected format:Anaesthesia needles
WITHDRAWN published on 1.1.1987
Selected format:Dental needles
WITHDRAWN published on 1.1.1987
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WITHDRAWN published on 1.1.1987
Selected format:Valves with female screw ends for water-heating system
WITHDRAWN published on 10.8.1998
Selected format:Cast iron and copper valves with screwed connections
WITHDRAWN published on 23.12.2008
Selected format:Cast iron and copper valves with screwed connections
WITHDRAWN published on 23.12.2008
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WITHDRAWN published on 1.1.1987
Selected format:Latest update: 2026-03-19 (Number of items: 2 268 472)
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