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Standards GB - Chinese national standards - Page 5589
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 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WITHDRAWN published on 20.12.1994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WITHDRAWN published on 11.8.2008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WITHDRAWN published on 14.11.1992
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GB/T 1149.6-1994
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Internal combustion engines—Piston rings—Inspection measuring principles
WITHDRAWN published on 20.12.1994
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GB/T 1149.6-2008
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Internal combustion engines—Piston rings—Part 6:Scraper rings made of cast iron
WITHDRAWN published on 11.8.2008
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GB/T 1149.7-1994
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Internal combustion engines—Piston rings—Coil-spring-loaded oil control rings
WITHDRAWN published on 20.12.1994
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GB/T 1149.8-2008
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Internal combustion engines—Piston rings—Part 8:Rectangular rings made of steel
WITHDRAWN published on 11.8.2008
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GB/T 11490-1989
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Dimensions of base for colour picture tube
WITHDRAWN published on 31.3.1989
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GB 11491-1989
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General specification of vertical turbomolecular pumps
WITHDRAWN published on 1.1.1989
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GB 11492-1989
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Specification of gap sparker for type FD08, FD12 and FD15
WITHDRAWN published on 1.1.1989
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