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Standards GB - Chinese national standards - Page 5107
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 7223-2026
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Livestock and poultry breed (synthetic lines)—Rongchang pig
Execute Date: september 2026
Standard published on 27.2.2026
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GB/T 7227-2006
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Forestry machineryGraphical symbols
Standard published on 12.7.2006
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GB/T 7230-2008
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Gas detector tube measurement system
Standard published on 23.12.2008
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GB/T 7232-2023
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Metal heat treatment—Terminology
Standard published on 6.8.2023
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GB/T 7233.1-2023
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Steel castings—Ultrasonic testing—Part 1:Steel castings for general purposes
Standard published on 17.3.2023
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GB/T 7233.2-2023
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Steel castings—Ultrasonic testing—Part 2:Steel castings for highly stressed components
Standard published on 23.5.2023
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GB/T 7234-2004
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Geometrical Product Specifications(GPS)--Measurement of roundness--Termsdefinitions and parameters of roundness
Standard published on 11.11.2004
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GB/T 7235-2004
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Geometrical Product Specifications(GPS)--Methods for the assessment of departure from roundness--Measurement of variations in radius
Standard published on 11.11.2004
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GB/T 7242-2010
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Centering error of lenses
Standard published on 1.12.2010
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GB/T 7244-1987
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Single coil spring lock washersHeavy type
Standard published on 5.2.1987
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