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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
Marine pneumatic clutch
WITHDRAWN published on 1.1.1988
Selected format:Shipbuilding--Shipborne barges, series 3--Ventilation system--Principal mating dimensions
WITHDRAWN published on 10.12.1988
Selected format:Ships wire nippers for topping lifts
WITHDRAWN published on 10.12.1988
Selected format:General specifications for marine magnetic compasses class B
WITHDRAWN published on 1.1.1988
Selected format:Marine magnetic compass of class B general specifications
WITHDRAWN published on 20.11.1995
Selected format:Marine roller fairleads
WITHDRAWN published on 1.1.1988
Selected format:Ships cross bitts
WITHDRAWN published on 1.1.1988
Selected format:Basic terminology of cycloidal drives
WITHDRAWN published on 10.12.1988
Selected format:Representation of drawings for cycloidal drives
WITHDRAWN published on 10.12.1988
Selected format:Symbols of geometrical data for cycloidal drives
WITHDRAWN published on 10.12.1988
Selected format:Latest update: 2026-04-13 (Number of items: 2 271 498)
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