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Standards GB - Chinese national standards - Page 5598
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 1227-2002
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Accurate pressure gauge
WITHDRAWN published on 25.11.2002
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GB/T 1227-2010
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Accurate pressure gauge
WITHDRAWN published on 2.9.2010
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GB/T 12270-1990
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Electrical tests and measuring procedures for radio-frequency coaxial connectors screening effectiveness
WITHDRAWN published on 1.1.1990
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GB/T 12271-1990
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Measuring methods of RF insertion loss for radio-frequency coaxial connectors
WITHDRAWN published on 1.1.1990
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GB 12273-1990
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Quartz crystal units--Generic specification for
WITHDRAWN published on 1.1.1990
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GB/T 12273-1996
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Quartz crystal units—A specification in the Quality Assessment System for Electronic Components—Part 1:Generic specification
WITHDRAWN published on 9.9.1996
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GB/T 12274-1990
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Quartz crystal controlled oscillators—Generic specification for
WITHDRAWN published on 9.2.1990
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GB/T 12278-1990
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Spherical plain radial bearings, joint type-Redial internal clearance
WITHDRAWN published on 1.1.1990
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GB 12279-1990
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Cardiac valve prostheses general technical specification
WITHDRAWN published on 26.3.1990
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GB 12279-2008
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Cardiovasular implants - Cardiac valve prostheses
WITHDRAWN published on 31.12.2008
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