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Standards GB - Chinese national standards - Page 5766
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 12776-1991
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Limits and measurements of insertion loss of radio interference suppressors and methods of radio interference suppression for ignition system of vehicles, motorboats and spark-ignited engine-driver devices
WITHDRAWN published on 1.1.1991
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GB/T 12777-1999
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General specification for metal bellows expansion joints
WITHDRAWN published on 11.6.1999
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GB/T 12777-2008
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General specification for metal bellows expansion joints
WITHDRAWN published on 4.8.2008
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GB/T 12778-1991
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Metallic materials—Determination of Charpy impact fracture surface
WITHDRAWN published on 11.5.1991
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GB/T 12778-2008
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Determination of Charpy impact fracture surface for metallic materials
WITHDRAWN published on 1.2.2008
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GB/T 12779-1991
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Method of measurement and evaluation of mechanical vibration for reciprocating machines
WITHDRAWN published on 26.3.1991
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GB 1278-1977
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WITHDRAWN published on 1.1.1977
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GB/T 12780-1991
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Trucks and buses—Brake—Bench test methods
WITHDRAWN published on 22.3.1991
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GB/T 12781-1991
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Motor vehicles—Vapor lock for fuel system—Test method
WITHDRAWN published on 22.3.1991
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GB/T 12782-1991
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Motor vehicle—Heating performance—Test method
WITHDRAWN published on 22.3.1991
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