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Standards GB - Chinese national standards - Page 5131
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 7424.22-2021
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Optical fibre cable generic specification—Part 22Basic optical cable test procedures—Environmental test methods
Standard published on 30.4.2021
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GB/T 7424.23-2021
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Optical fibre cable generic specification—Part 23Basic optical cable test procedures—Cable element test methods
Standard published on 11.10.2021
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GB/T 7424.24-2020
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Optical fibre cable generic specification—Part 24: Basic optical cable test procedures—Electrical test methods
Standard published on 14.12.2020
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GB/T 7424.3-2025
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Optical fibre cables—Part 3Sectional specification—Outdoor cables
Standard published on 5.10.2025
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GB/T 7424.370-2025
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Optical fibre cables—Part 3-70: Outdoor cables—Family specification for optical fibre cables for rapid/multiple deployment
Standard published on 31.10.2025
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GB/T 7424.4-2003
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Optical fiber cables--Part 4-1:Section specification--Optical fibre composite overhead ground wire
Standard published on 24.11.2003
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GB/T 7424.5-2012
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Optical fibre cables - Part 5: Sectional specification - Micro-duct optical fibre cables and fibre units for installation by blowing
Standard published on 29.6.2012
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GB/T 743-2003
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Pulps--Determination of ether solubles
Standard published on 25.8.2003
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GB/T 7430-2012
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Imaging materials - Photographic films - Specifications for safety film
Standard published on 29.6.2012
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GB/T 7436-1987
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Specifications of TDM equipment operating on an analog telephone-type circuit for telegraph and lower-speed data
Standard published on 16.3.1987
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