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Standards GB - Chinese national standards - Page 6193
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 15972.40-2008
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Specifications for optical fibre test methods—Part 40:Measurement methods and test procedures for transmission and optical characteristics—Attenuation
WITHDRAWN published on 10.4.2008
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GB/T 15972.41-2008
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Specifications for optical fibre test methods—Part 41:Measurement methods and test procedures for transmission and optical characteristics—Bandwidth
WITHDRAWN published on 31.3.2008
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GB/T 15972.42-2008
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Specifications for optical fibre test methods—Part 42:Measurement methods and test procedures for transmission and optical characteristics—Chromatic dispersion
WITHDRAWN published on 31.3.2008
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GB/T 15972.43-2008
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Specifications for optical fibre test methods—Part 43: Measurement methods and test procedures for transmission and optical characteristics—Numerrical aperture
WITHDRAWN published on 31.3.2008
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GB/T 15972.44-2008
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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
WITHDRAWN published on 31.3.2008
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GB/T 15972.45-2008
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Specifications for optical fibre test methods—Part 45:Measurement methods and test procedures for transmission and optical characteristics—Mode field diameter
WITHDRAWN published on 31.3.2008
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GB/T 15972.47-2008
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Specifications for optical fibre test methods—Part 47:Measurement methods and test procedures for transmission and optical characteristics—Macrobending loss
WITHDRAWN published on 31.3.2008
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GB/T 15972.49-2008
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Specifications for optical fibre test methods—Part 49:Measurement methods and test procedures for transmission and optical characteristics—Differential mode delay
WITHDRAWN published on 31.3.2008
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GB/T 15972.5-1998
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Generic specification for optical fibres Part 5:Measuring methods for environmental characteristics
WITHDRAWN published on 21.12.1998
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GB/T 15972.54-2008
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Specifications for optical fibre test methods—Part 54:Measurement methods and test procedures for environmental characteristics—Gamma irradiation
WITHDRAWN published on 31.3.2008
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