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Standards GB - Chinese national standards - Page 233
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 12760-2018
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Cylindrical worm and wormwheel information of the dimensional data to be givem on the drawing
Standard published on 14.5.2018
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GB/T 12761-2025
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Raise-boring machines
Standard published on 30.5.2025
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GB/T 12763.1-2007
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Specifications for oceanographic survey - Part 1: General
Standard published on 13.8.2007
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GB/T 12763.10-2007
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Specification for oceanographic survey - Part 10Submarine topography and geomorphology
Standard published on 13.8.2007
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GB/T 12763.11-2007
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Specifications for oceanographic survey - Part 11marine engineering geological investigation
Standard published on 13.8.2007
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GB/T 12763.2-2007
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Specifications for oceanographic survey - Part 2: marine hydrographic observation
Standard published on 13.8.2007
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GB/T 12763.3-2020
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Specifications for oceanographic survey— Part 3:Marine meteorological observations
Standard published on 14.12.2020
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GB/T 12763.4-2007
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Specifications for oceanographic survey - Part 4: Survey of chemical parameters in sea water
Standard published on 13.8.2007
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GB/T 12763.5-2007
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Specifications for oceanographic survey - Part 5: Survey of acoustical and optical parameters in the sea
Standard published on 13.8.2007
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GB/T 12763.6-2007
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Specifications for oceanographic survey - Part 6: Marine biological survey
Standard published on 13.8.2007
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