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Standards GB - Chinese national standards - Page 992
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 18779.3-2023
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Geometrical product specifications (GPS)—Inspection by measurement of workpieses and measuring equipment—Part 3:Guidelines for achieving agreements on measurement uncertainty statements
Standard published on 17.3.2023
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GB/T 18779.4-2020
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Geometrical product specifications (GPS)—Inspection by measurement of workpieces and measuring equipment—Part 4: Background on functional limits and specification limits in decision rules
Standard published on 14.12.2020
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GB/T 18779.5-2020
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Geometrical product specifications (GPS)—Inspection by measurement of workpieces and measuring equipment—Part 5: Uncertainty in verification testing of indicating measuring instruments
Standard published on 14.12.2020
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GB/T 18779.6-2020
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Geometrical product specifications (GPS)—Inspection by measurement of workpieces and measuring equipment—Part 6: Generalized decision rules for the acceptance and rejection of instruments and workpieces
Standard published on 14.12.2020
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GB/T 1878-1995
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Phosphate rock and concentrate--Determination of iodine content--Spectrophotometric andspecific ion electrode methods
Standard published on 20.12.1995
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GB/T 18781-2023
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Cultured pearl grading
Standard published on 23.5.2023
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GB/T 18784-2002
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Quality of CAD/CAM data
Standard published on 18.7.2002
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GB/T 18784.2-2005
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Assurance method of CAD/CAM data quality
Standard published on 9.9.2005
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GB/T 18785-2002
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Commercial account summary message
Standard published on 18.7.2002
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GB/T 18787.1-2015
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Information technology—Electronic book—Part 1General specification of device
Standard published on 31.12.2015
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