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Standards GB - Chinese national standards - Page 5310
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 9715-1988
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Information processing--Precision reels for magnetic tape used in interchange instrumentation applications
Standard published on 5.9.1988
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GB/T 9716-1988
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Information processing--Unrecorded 12.7mm (0.5in)wide magnetic tape for information interchange-32ftpmm(800 ftpi)NRZ1126ftpmm(3200ftpi)phase encoded and 356ftpmm(9042ftpi) NRZ1
Standard published on 5.9.1988
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GB/T 9717-1988
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Information processing--Unrecorded magnetic tapes for interchange instrumentation applications -- Generaldimensional requirements
Standard published on 5.9.1988
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GB/T 9718-1988
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Information processing--General purpose reels with 8mm centre hole for magnetic tape for interchange instrumentation applications
Standard published on 5.9.1988
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GB/T 972-2008
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Thread rolling flat dies
Standard published on 3.6.2008
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GB/T 9721-2006
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Chemical reagent - General rules for the molecular absorption spectrophotometry (ultraviolet and visible)
Standard published on 1.9.2006
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GB/T 9722-2023
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Chemical reagent—General rules for the gas chromatography
Standard published on 6.8.2023
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GB/T 9723-2007
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Chemical Reagent - General rule for flame atomic absorption spectrometric analysis
Standard published on 26.9.2007
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GB/T 9724-2007
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Chemical reagent - General rule for the determination of pH
Standard published on 26.9.2007
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GB/T 9725-2007
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Chemical reagent - General rule for potentiometric titration
Standard published on 26.9.2007
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