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Standards GB - Chinese national standards - Page 6239
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 1554-1979
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WITHDRAWN published on 1.1.1979
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GB/T 1554-1995
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Test method for crystallographic perfection of silicon by preferential etch techniques
WITHDRAWN published on 18.4.1995
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GB 15540-1995
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EMC specification and test methods for land mobile communication equipment
WITHDRAWN published on 6.4.1995
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GB/T 15543-1995
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Quality of electric energy supply—Admissible three-phase voltage unbalance factor
WITHDRAWN published on 6.4.1995
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GB/T 15544-1995
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Short-circuit current calculation in three-phase a.c. systems
WITHDRAWN published on 6.4.1995
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GB/T 15544.1-2013
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Short-circuit current calculation in three-phase a.c.systems—Part 1:Calculation of currents
WITHDRAWN published on 17.12.2013
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GB/T 15545-1995
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Unshaped refractory—Packing, marking, transportation and storage
WITHDRAWN published on 11.4.1995
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GB/T 15546-1995
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Terms of mill rolls
WITHDRAWN published on 11.4.1995
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GB/T 15547-1995
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Forged steel cold roll blanks
WITHDRAWN published on 11.4.1995
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GB/T 15548-1995
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General specification for three-phase synchronous generator driven by reciprocating internal combustion engine
WITHDRAWN published on 6.4.1995
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