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Standards GB - Chinese national standards - Page 5768
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 12789.2-1991
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Criteria for nuclear reactor instrumentation--Part 2:Pressurized water reactors
WITHDRAWN published on 11.4.1991
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GB/T 12789.3-1992
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Criteria for nuclear reactorinstrumentation--Part 3:High temperature gas cooled reactor(HTGR)
WITHDRAWN published on 17.12.1992
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GB/T 1279-1989
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Chemical reagent—Ammonium iron () sulfate dodecahydrate
WITHDRAWN published on 31.3.1989
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GB/T 12790-1991
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Method for identification of documents related to safety class 1E equipment and systems for nuclear power plants
WITHDRAWN published on 11.4.1991
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GB 12791-1991
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Performance requirements and test methods for point ultraviolet flame detectors
WITHDRAWN published on 11.4.1991
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GB/T 12792-1991
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Methods of measurement of impedance uniformity for radio-frequency cables
WITHDRAWN published on 1.1.1991
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GB/T 12796-1991
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Generic specification for permanent ferrite magnets
WITHDRAWN published on 15.4.1991
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GB/T 12797-1991
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Sectional specification for permanent ferrite magnets for use in micromotors
WITHDRAWN published on 15.4.1991
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GB/T 12798-1991
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Axial lead cores made of magnetic oxides or iron powder
WITHDRAWN published on 15.4.1991
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GB 12799-1991
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Safety and health requirements for oil resistant and waterproof clothing
WITHDRAWN published on 29.4.1991
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