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Standards GB - Chinese national standards - Page 5772
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 12820-1991
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Stand test methods of diesel locomotives—Test of oil/water cooling equipment performance and heat balance
WITHDRAWN published on 22.4.1991
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GB/T 12821-1991
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Stand test methods of diesel locomotives Locomotives no-load performance test
WITHDRAWN published on 22.4.1991
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GB/T 12822-1991
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Geometric conditions for photographic reflection density measurement
WITHDRAWN published on 30.4.1991
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GB/T 12823-1991
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Terms, symbols, coordinate system and functional notations for photographic density measurements
WITHDRAWN published on 30.4.1991
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GB 12824-1991
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Rubber, styrene-butadiene SBR1502
WITHDRAWN published on 25.4.1991
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GB/T 12824-2002
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Rubber,styrene—butadiene(SBR)1502
WITHDRAWN published on 15.10.2002
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GB/T 12825-1991
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Polymeric materials, cellular flexible--Determination of hardness(indentation technique)
WITHDRAWN published on 25.4.1991
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GB/T 12826-1991
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The calculation guide of the drum(reeling) cable""s current rating
WITHDRAWN published on 27.5.1991
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GB/T 12827-1991
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Standard reference acetylene black and standard practice for evaluation
WITHDRAWN published on 23.4.1991
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GB/T 12828-1991
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Rubberraw and unvulcanized compounded--Determination of plasticity number and recovery number--Parallel plate method
WITHDRAWN published on 25.4.1991
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