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Standards GB - Chinese national standards - Page 8588
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 7438-1987
WITHDRAWN
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Numbering for telex and low speed data in national communi cation network
WITHDRAWN published on 16.3.1987
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GB 7439-1987
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The wire configurations on poles of open wire lines for toll telecommunications
WITHDRAWN published on 1.1.1987
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GB/T 744-1989
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Pulps—Determination of -cellulose
WITHDRAWN published on 30.11.1965
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GB/T 7440-1987
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Calculating methods and measuring methods for transmission parameters of open-wire communication lines
WITHDRAWN published on 16.3.1987
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GB/T 7441-1987
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Noise measurement method for the power plant turbine generator
WITHDRAWN published on 17.3.1987
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GB 7442-1987
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Angle electric grinders
WITHDRAWN published on 1.1.1987
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GB/T 7442-1996
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Angle electric grinders
WITHDRAWN published on 1.1.1996
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GB/T 7442-2001
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Electric angle grinders
WITHDRAWN published on 24.10.2001
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GB 7443-1987
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Electric rotary hammers
WITHDRAWN published on 1.1.1987
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GB/T 7443-1996
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Electric rotary hammers
WITHDRAWN published on 1.1.1996
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