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Standards GB - Chinese national standards - Page 7123
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 239.1-2012
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Metallic materials—Wire—Part 1:Simple torsion test
WITHDRAWN published on 11.5.2012
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GB/T 239.2-2012
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Metallic materials—Wire—Part 2:Reverse torsion test
WITHDRAWN published on 11.5.2012
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GB/T 2390-1980
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Determination of pH value for reactive dyes
WITHDRAWN published on 1.1.1980
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GB/T 2390-2003
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Water-soluble dyes—Determination of pH value
WITHDRAWN published on 5.3.2003
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GB/T 23901.1-2009
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Non-destructive testing—Image quality of radiographs—Part 1:Image quality indicators (wire type)—Determination of image quality value
WITHDRAWN published on 26.5.2009
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GB/T 23901.2-2009
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Non-destructive testing—Image quality of radiographs—Part 2:Image quality indicators (step/hole type)—Determination of image quality value
WITHDRAWN published on 26.5.2009
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GB/T 23901.3-2009
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Non-destructive testing—Image quality of radiographs—Part 3:Image quality classes for ferrous metals
WITHDRAWN published on 26.5.2009
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GB/T 23901.4-2009
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Non-destructive testing—Image quality of radiographs—Part 4:Experimental evaluation of image quality values and image quality tables
WITHDRAWN published on 26.5.2009
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GB/T 23901.5-2009
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Non-destructive testing—Image quality of radiographs—Part 5:Image quality indicators (duplex wire type)—Determination of image unsharpness value
WITHDRAWN published on 26.5.2009
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GB/T 23902-2009
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Non-destructive testing—Ultrasonic examination—Time-of-flight diffraction technique as a method for detection and sizing of discontinuities
WITHDRAWN published on 26.5.2009
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