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Standards GB - Chinese national standards - Page 8651
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 7775-1987
WITHDRAWN
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Vapour vacuum pumps--Measurement of the heating time and heating power
WITHDRAWN published on 1.1.1987
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GB 7776-1987
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Vapour vacuum pumps--Measurement of back-streaming rate of pump fluid
WITHDRAWN published on 1.1.1987
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GB/T 7776-1987
WITHDRAWN
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Vapour vacuum pumps--Measurement of back-streaming rate of pump fluid
WITHDRAWN published on 23.5.1987
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GB/T 7777-1987
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Measurement and evaluation of mechanical vibration of reciprocating piston compressors
WITHDRAWN published on 23.5.1987
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GB/T 7777-2003
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Measurement and evaluation of mechanical vibration of displacement compressors
WITHDRAWN published on 29.10.2003
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GB/T 7778-2001
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Number designation and safety classification of refrigerants
WITHDRAWN published on 10.1.2001
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GB/T 7778-2008
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Number designation and safety classification of refrigerants
WITHDRAWN published on 12.11.2008
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GB/T 7779-1987
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The model designation of centrifuges
WITHDRAWN published on 23.5.1987
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GB/T 7779-2005
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The model designation of centrifuges
WITHDRAWN published on 11.7.2005
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GB 778-1984
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Vane wheel type water meters for cold water--Nominal diameter 15mm to 40mm
WITHDRAWN published on 1.1.1984
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