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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
Specifications for optical fibre test methods—Part 10:Measurement methods and test procedures—General and guidance
WITHDRAWN published on 31.3.2008
Selected format:Generic specification for optical fibres—Part 2:Measuring methods for dimensions
WITHDRAWN published on 21.12.1998
Selected format:Specifications for optical fibre test methods—Part 20:Measurement methods and test procedures for dimensions—Fiber geometry
WITHDRAWN published on 10.4.2008
Selected format:Generic specification for optical fibres Part 3:Measuring methods for mechanical characteristics
WITHDRAWN published on 21.12.1998
Selected format:Specifications for optical fibre test methods—Part 30:Measurement methods and test procedures for mechanical characteristics—Fibre proof test
WITHDRAWN published on 10.4.2008
Selected format:Specifications for optical fibre test methods—Part 31:Measurement methods and test procedures for mechanical characteristics—Tensile strength
WITHDRAWN published on 31.3.2008
Selected format:Specifications for optical fibre test methods—Part 32:Measurement methods and test procedures for mechanical characteristics—Coating strippability
WITHDRAWN published on 31.3.2008
Selected format:Specifications for optical fibre test methods—Part 33:Measurement methods and test procedures for mechanical characteristics—Stress corrosion susceptibility
WITHDRAWN published on 31.3.2008
Selected format:Specifications for optical fibre test methods—Part 34:Measurement methods and test procedures for mechanical characteristics—Fibre curl
WITHDRAWN published on 31.3.2008
Selected format:Generic specification for optical fibres Part 4:Measuring methods for transmission and optical characteristics
WITHDRAWN published on 21.12.1998
Selected format:Latest update: 2025-11-10 (Number of items: 2 243 715)
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