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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
Test methods for environmental properties of optical fibres--Temperature cycling
WITHDRAWN published on 11.12.1987
Selected format:Test methods for the environmental properties of optical fibre cables--General
WITHDRAWN published on 1.1.1987
Selected format:Test methods for the envionmental properties of optical fibre cables--Temperature cycling
WITHDRAWN published on 1.1.1987
Selected format:Test methods for the environmental properties of optical fibre cables--Internal gas pressure
WITHDRAWN published on 1.1.1987
Selected format:Test methods for the environmental properties of optical fibre cables--Water penetration
WITHDRAWN published on 1.1.1987
Selected format:Test methods for the environmontal properties of optical fibre cables--Impact at low temperature
WITHDRAWN published on 1.1.1987
Selected format:Test methods for the environmental properties of optical fibre cables--Winding at low temperature
WITHDRAWN published on 1.1.1987
Selected format:Pipe wrenches
WITHDRAWN published on 1.1.1987
Selected format:Bolt clipper
WITHDRAWN published on 1.1.1987
Selected format:Safety of amusement machines and amusement park equipments
WITHDRAWN published on 31.7.2000
Selected format:Latest update: 2026-03-20 (Number of items: 2 268 518)
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