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Standards GB - Chinese national standards - Page 5977
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 13858.2-1992
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Specification for 300 telephone channels modulation and demodulation equipment used in middle distance terrestrial analog radio-relay systems
WITHDRAWN published on 6.10.1992
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GB/T 13859-1992
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Performance and test methods of 30 channels pulse code modulation drop/insert equipment at 2048 kbit/s
WITHDRAWN published on 6.10.1992
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GB 1386-1978
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WITHDRAWN published on 1.1.1978
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GB/T 1386.1-1997
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Insulators for low voltage power lines Part 1:Insulators for low voltage overhead power lines
WITHDRAWN published on 10.4.1997
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GB/T 1386.2-1997
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Insulators for low voltage power lines Part 2:Strain insulators for overhead power lines
WITHDRAWN published on 10.4.1997
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GB/T 1386.3-1997
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Insulators for low voltage power lines Part 3:Insulators for low voltage wiring
WITHDRAWN published on 10.4.1997
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GB/T 1386.4-1997
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Insulators for low voltage power lines Part 4:Insulators for trolley overhead lines
WITHDRAWN published on 10.4.1997
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GB/T 13861-1992
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Classification and code for the hazardous and harmful factors in production process
WITHDRAWN published on 12.11.1992
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GB/T 13861-2009
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Classification and code for the hazardous and harmful factors in process
WITHDRAWN published on 15.10.2009
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GB/T 13862-1992
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Basic testing methods of switches for appliance
WITHDRAWN published on 12.11.1992
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