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Standards GB - Chinese national standards - Page 5211

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 7986-2025

Conveyor belts—Drum friction testing

Standard published on 29.8.2025

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GB/T 7989-2013

Viterous and porcelain enamelsDetermination of resistance to chemical corrosion by boiling acids and their vapours

Standard published on 31.12.2013

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GB/T 799-2020

Foundation bolts

Standard published on 19.11.2020

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GB/T 7991.1-2021

Test method of viterous and porcelain enamels—Part 1Determination of resistance to alkaline liquids

Standard published on 31.12.2021

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GB/T 7991.10-2024

Test method of viterous and porcelain enamels—Part 10Determination of dissolution of heavy metal ions from enamelled articles used for preparation and storage of food and limits

Standard published on 29.9.2024

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GB/T 7991.3-2021

Test method of viterous and porcelain enamels—Part 3Determination of resistance to thermal shock

Standard published on 31.12.2021

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