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Standards GB - Chinese national standards - Page 7581
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 7923-2004
WITHDRAWN
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Surface grinding machines with vertical grinding wheel spindle and reciprocating table—Parameters
WITHDRAWN published on 9.6.2004
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GB/T 7924-1987
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Optical projection profile grinding machines--Parameters
WITHDRAWN published on 11.6.1987
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GB/T 7924-2004
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Optical projection profile grinding machines—Parameters
WITHDRAWN published on 9.6.2004
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GB/T 7925-1987
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Parameters of wire cut electric discharge machines
WITHDRAWN published on 18.6.1987
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GB/T 7925-2005
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Wire electrical-discharge machines (Reciprocating traveling type)—Parameters
WITHDRAWN published on 18.5.2005
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GB/T 7926-1987
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Accuracy of wire cut electric discharge machines
WITHDRAWN published on 11.6.1987
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GB/T 7926-2005
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Wire electrical-discharge machines (Reciprocating traveling type)—Testing of the accuracy
WITHDRAWN published on 18.5.2005
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GB/T 7927-1987
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Method of measurement for walking tractor vibration
WITHDRAWN published on 12.6.1987
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GB/T 7929-1995
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Specifications for cartographic symbols 15001100012000 topographic maps
WITHDRAWN published on 2.8.1995
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GB 7930-1987
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Specifications for aerophotogrammetric office operation 1500 1100012000 topographic maps
WITHDRAWN published on 10.6.1987
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