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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
Casing, core barrel and sediment tube threads for hydrogeologic and water well drilling
WITHDRAWN published on 1.1.1988
Selected format:Drill pipes for hydrogeologic and water well drilling
WITHDRAWN published on 1.1.1988
Selected format:Drill pipe tool joints for hydrogeologic and water well drilling
WITHDRAWN published on 1.1.1988
Selected format:Drill collars for hydrogeologic and water well drilling
WITHDRAWN published on 1.1.1988
Selected format:Generic specification for microcomputers
WITHDRAWN published on 17.10.2000
Selected format:Generic specification for vector plotters
WITHDRAWN published on 20.9.1988
Selected format:Fuses for domestic and similar purposes
WITHDRAWN published on 1.1.1988
Selected format:Fuses for domestic and similar purposes
WITHDRAWN published on 21.1.1998
Selected format:Thermal-links-Requirements and application guide
WITHDRAWN published on 24.8.1998
Selected format:Thermal-links—Requirements and application guide
WITHDRAWN published on 24.4.2008
Selected format:Latest update: 2026-03-20 (Number of items: 2 268 518)
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