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Standards GB - Chinese national standards - Page 582
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
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GB/T 15972.30-2021
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Specifications for optical fibre test methods—Part 30: Measurement methods and test procedures for mechanical characteristics—Fibre proof test
Standard published on 30.4.2021
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GB/T 15972.31-2021
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Specifications for optical fibre test methods—Part 31: Measurement methods and test procedures for mechanical characteristics—Tensile strength
Standard published on 20.8.2021
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GB/T 15972.32-2021
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Specifications for optical fibre test methods—Part 32 Measurement methods and test procedures for mechanical characteristics—Coating strippability
Standard published on 11.10.2021
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GB/T 15972.33-2024
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Specifications for optical fibre test methods—Part 33: Measurement methods and test procedures for mechanical characteristics—Stress corrosion susceptibility
Standard published on 28.11.2024
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GB/T 15972.34-2021
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Specifications for optical fibre test methods—Part 34: Measurement methods and test procedures for mechanical characteristics—Fibre curl
Standard published on 30.4.2021
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GB/T 15972.40-2024
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Specifications for optical fibre test methods—Part 40:Measurement methods and test procedures for transmission characteristics—Attenuation
Standard published on 28.11.2024
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GB/T 15972.41-2021
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Specifications for optical fibre test methods—Part 41: Measurement methods and test procedures for transmission characteristics—Bandwidth
Standard published on 30.4.2021
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GB/T 15972.42-2021
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Specifications for optical fibre test methods—Part 42: Measurement methods and test procedures for transmission characteristics—Chromatic dispersion
Standard published on 30.4.2021
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GB/T 15972.43-2021
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Specifications for optical fibre test methods—Part 43: Measurement methods and test procedures for transmission characteristics—Numerical aperture
Standard published on 30.4.2021
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GB/T 15972.44-2017
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Specifications for optical fibre test methods—Part 44: Measurement methods and test procedures for transmission and optical characteristics—Cut-off wavelength
Standard published on 31.7.2017
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