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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
Rotary handle nut
WITHDRAWN published on 1.1.1991
Selected format:Railway applications—Rolling stock—Pantographs—Characteristics and tests—Part 1:Pantographs for mainline vehicles
WITHDRAWN published on 24.3.2008
Selected format:Railway applications—Rolling stock—Pantographs—Characteristics and tests—Part 2:Pantographs for metros and light rail vehicles
WITHDRAWN published on 24.3.2008
Selected format:Railway applications—Rolling stock equipment—Shock and vibration tests
WITHDRAWN published on 24.3.2008
Selected format:Multiple handle nut
WITHDRAWN published on 1.1.1991
Selected format:Pressing-in threaded bush
WITHDRAWN published on 1.1.1991
Selected format:Rotation-in threaded bush
WITHDRAWN published on 1.1.1991
Selected format:Determination of phosphorus in coal
WITHDRAWN published on 1.1.1982
Selected format:Determination of phosphorous in coal
WITHDRAWN published on 14.6.1996
Selected format:Holddown serew
WITHDRAWN published on 1.1.1991
Selected format:Latest update: 2026-01-11 (Number of items: 2 254 176)
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