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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
Measuring methods for (geometrical) dimensional parameters of optical fibres--Near-field technique
WITHDRAWN published on 1.1.1987
Selected format:Measuring methods for (geometrical)dimensional parameters of optical fibres--Transverse offset technique
WITHDRAWN published on 1.1.1987
Selected format:Measuring methods for (geometrical) dimensional parametors of optical fibres--Transmitted field technique
WITHDRAWN published on 1.1.1987
Selected format:Measuring methods for (geomtrical) dimensional parameters of optical fibres--Four circle tolerance field
WITHDRAWN published on 1.1.1987
Selected format:-
WITHDRAWN published on 1.1.1987
Selected format:-
WITHDRAWN published on 1.1.1987
Selected format:-
WITHDRAWN published on 1.1.1987
Selected format:-
WITHDRAWN published on 1.1.1987
Selected format:-
WITHDRAWN published on 1.1.1987
Selected format:Test methods for environmental properties of optical fibres--General
WITHDRAWN published on 11.12.1987
Selected format:Latest update: 2026-03-20 (Number of items: 2 268 518)
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