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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
Paper and board--Determination of moisture content
WITHDRAWN published on 22.2.1989
Selected format:Paper and board—Determination of moisture content
WITHDRAWN published on 20.10.2003
Selected format:Paper,board and pulp—Determination of moisture content of analytical sample
WITHDRAWN published on 19.8.2008
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WITHDRAWN published on 1.1.1984
Selected format:Spiral wound gaskets test method of hydraulic pressure sealing characteristics
WITHDRAWN published on 30.7.1984
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WITHDRAWN published on 1.1.1984
Selected format:Spiral wound gaskets test method of steam sealing characteristics
WITHDRAWN published on 30.7.1984
Selected format:Specification and symbol of spiral wound gaskets
WITHDRAWN published on 19.2.1993
Selected format:Specification and symbol of spiral wound gaskets
WITHDRAWN published on 15.4.2003
Selected format:Classification for spiral wound gaskets
WITHDRAWN published on 15.11.2009
Selected format:Latest update: 2025-09-17 (Number of items: 2 234 360)
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