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Standards GB - Chinese national standards - Page 4534
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 45372-2025
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Determination of phenols in liquid products from coal chemical industry—Comprehensive two dimensional gas chromatography-mass spectrometry/hydrogen flame ionization detector
Standard published on 28.2.2025
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GB/T 45373-2025
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Petroleum and liquid petroleum products—Direct measurement of density in tanks—Resonance cylinder densitometer methods
Standard published on 28.2.2025
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GB/T 45374-2025
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Lifting appliances—Hazard identification
Standard published on 28.3.2025
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GB/T 45375-2025
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Earth-moving machinery—Assessment method for remanufacturing capability maturity
Standard published on 28.3.2025
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GB/T 45376-2025
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Electroforming process specification of nickel and copper
Standard published on 28.3.2025
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GB/T 45377-2025
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Non-destructive testing—Long-range inspection of above-ground pipelines and plant piping using guided wave testing with axial propagation
Standard published on 28.3.2025
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GB/Z 45378-2025
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Non-destructive testing—Methods for absolute calibration of acoustic emission transducers by the reciprocity technique
Standard published on 28.3.2025
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GB/T 45379-2025
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Five-axis hybrid electrical discharge and arc milling machines—Testing of the accuracy
Standard published on 28.3.2025
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GB/T 45380-2025
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Non-destructive testing—Nonlinear ultrasonic testing method of microstructure damage
Standard published on 28.3.2025
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GB/T 45381-2025
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Gantry-type die sinking electrical discharge machines with movable crossbeam—Testing of the accuracy
Standard published on 28.3.2025
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