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Standards GB - Chinese national standards - Page 5591
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 11488-1989
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Detail specification for electronic components--Electronic tube of type FU-250F
WITHDRAWN published on 1.1.1989
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GB 11489-1989
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Detail specification for electronic components--Electronic tube of type FU-100F
WITHDRAWN published on 1.1.1989
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GB/T 1149.1-1994
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Internal combustion engines—Piston rings—General specifications
WITHDRAWN published on 20.12.1994
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GB/T 1149.11-2010
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Internal combustion engines—Piston rings—Part 11:Half keystone rings made of cast iron
WITHDRAWN published on 10.11.2010
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GB/T 1149.12-2013
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Internal combustion engines—Piston rings—Part 12:Half keystone rings made of steel
WITHDRAWN published on 31.12.2013
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GB/T 1149.2-1994
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Internal combustion engines—Piston rings—Vocabulary
WITHDRAWN published on 20.12.1994
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GB/T 1149.3-1992
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Internal combustion engines—Piston rings-Scraper rings
WITHDRAWN published on 14.11.1992
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GB/T 1149.4-1994
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Internal combustion engines—Piston rings—Quality requirements
WITHDRAWN published on 20.12.1994
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GB/T 1149.4-2008
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Internal combustion engines—Piston rings—Part 4:Quality requirements
WITHDRAWN published on 11.8.2008
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GB/T 1149.5-1992
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Internal combustion engines—Piston rings-Oil control rings
WITHDRAWN published on 14.11.1992
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