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Standards GB - Chinese national standards - Page 6787
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 1980-1980
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Rated frequency of electrical equipment
WITHDRAWN published on 1.1.1980
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GB/T 1980-1996
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Standard frequencies
WITHDRAWN published on 19.12.1996
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GB/T 1981-1989
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Test methods for insulating varnishes containing solvent
WITHDRAWN published on 22.3.1989
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GB/T 1981.1-2004
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Varnishes used for eletrical insulation—Part 1:Definitions and general requirements
WITHDRAWN published on 4.2.2004
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GB/T 1981.2-2003
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Varnishes used for electrical insulation—Part 2:Methods of test
WITHDRAWN published on 5.6.2003
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GB/T 19812.1-2005
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Plastic equipment for water saving irrigation—Drip tape with labyrinth on one side
WITHDRAWN published on 22.6.2005
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GB/T 19812.2-2005
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Plastic equipment for water saving irrigation—Pressure compensating emitter and emitting pipe
WITHDRAWN published on 22.6.2005
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GB/T 19812.3-2008
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Plastic equipment for water saving irrigation—Drip pipe and tape inlaid with emitters inside
WITHDRAWN published on 4.1.2008
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GB/T 19813-2005
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Solar energy raised pavement markers
WITHDRAWN published on 10.6.2005
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GB 19815-2005
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Safety requirements for centrifuge
WITHDRAWN published on 27.6.2005
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