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Standards GB - Chinese national standards - Page 539
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 15546-2022
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Terms of mill rolls
Standard published on 12.10.2022
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GB/T 15547-2012
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Blanks of forged steel rolls for cold rolling mill
Standard published on 5.11.2012
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GB/T 15547-2025
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Blanks of forged steel rolls for cold rolling mill
Execute Date: may 2026
Standard published on 31.10.2025
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GB/T 15548-2023
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General specification for three-phase synchronous generators driven by reciprocating internal combustion engine
Standard published on 27.11.2023
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GB/T 15549-2022
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Sensory analysis—Methodology— Initiation and training of assessors in the detection and recognition of odours
Standard published on 12.10.2022
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GB/T 1555-2023
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Test methods for determining the orientation of a semiconductive single crystal
Standard published on 6.8.2023
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GB/T 15551-2016
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Mulberry silk fabrics
Standard published on 25.4.2016
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GB/T 15552-2015
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Testing methods and inspection regulations for silk fabrics
Standard published on 11.9.2015
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GB/T 15555.1-1995
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Solid waste--Determination of total mercury--Cold atomic absorption spectrometry
Standard published on 28.3.1995
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GB/T 15555.10-1995
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Solid waste--Determination of nickel--Dimethylglyoxime spectrophotometric method
Standard published on 28.3.1995
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