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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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WITHDRAWN published on 1.1.1984
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WITHDRAWN published on 1.1.1984
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WITHDRAWN published on 1.1.1984
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WITHDRAWN published on 1.1.1984
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WITHDRAWN published on 1.1.1984
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WITHDRAWN published on 1.1.1984
Selected format:Thermoplastic pipes--Nominal outside diameters and nominal pressures--Metric series
WITHDRAWN published on 1.1.1984
Selected format:Thermoplastics pipes for the conveyance of fluids—Nominal outside diameters and nominal pressures
WITHDRAWN published on 24.10.2001
Selected format:Test method of corrosion on the unplasticized polyvinyl chloride (PVC)pipes for chemical industry
WITHDRAWN published on 1.1.1984
Selected format:Unplasticized polyvinyl chloride (PVC)pipes for chemical industry
WITHDRAWN published on 1.1.1984
Selected format:Latest update: 2025-11-06 (Number of items: 2 243 364)
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