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Standards GB - Chinese national standards - Page 5144
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 7605-2024
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Determination of demulsibility for turbine oils in service
Standard published on 23.8.2024
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GB/T 7607-2010
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Criteria for changing of diesel engine oil
Standard published on 10.1.2011
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GB/T 7609-1995
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General test method for transmission performance of PCM voice channel in telecommunication network
Standard published on 14.12.1995
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GB/T 7611-2016
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Characteristic of the electrical interface at hierarchical bit rate for digital network
Standard published on 25.4.2016
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GB/T 7618-1987
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Electrical characteristics for unbalanced double-current interchange circuits for general use with inte-grated circuit equipment in the field of data communications
Standard published on 3.4.1987
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GB/T 7619-1987
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Electrical characteristics for balanced double-current interchange circuits for general use with integrated circuit equipment in the field of datacommunications
Standard published on 3.4.1987
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GB/T 762-2002
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Standard current ratings
Standard published on 26.3.2002
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GB/T 7620-1987
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300 bits per second duplex modem standardized for use in the general switched telephone network
Standard published on 3.4.1987
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GB/T 7621-1987
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1200 bits per second duplex modem standardized for use in the general switched telephone network and on point-to-point 2-wire leased telephonecircuits
Standard published on 3.4.1987
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GB/T 7622-1987
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600/1200 bauds modem standardized for use in the general switched telephone network
Standard published on 3.4.1987
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