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Standards GB - Chinese national standards - Page 5569
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 11341-1989
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Safety rules for overhead chain conveyers
WITHDRAWN published on 23.6.1989
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GB 11342-1989
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Standard for examination of the safety techniques for operators of motor vehicles in mines and factories
WITHDRAWN published on 23.6.1989
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GB/T 11343-1989
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Ultrasonic angle beam examination by the contact method
WITHDRAWN published on 8.5.1989
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GB/T 11344-1989
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Measuring thickness by ultrasonic pulse-echo contact method
WITHDRAWN published on 8.5.1989
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GB/T 11344-2008
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Non-destructive testing—Practice for measuring thickness by ultrasonic pulse-echo contact method
WITHDRAWN published on 30.7.2008
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GB/T 11345-1989
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Method for manual ultrasonic testing and classification of testing results for ferritic steel welds
WITHDRAWN published on 8.5.1989
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GB/T 11345-2013
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Non-destructive testing of welds—Ultrasonic testing—Techniques,testing levels,and assessment
WITHDRAWN published on 18.9.2013
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GB/T 11346-1989
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Standard radiographs for inspection grading of gas porosity(round) in aluminum alloy casting
WITHDRAWN published on 8.5.1989
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GB/T 11347-1989
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Mechanical vibration of large rotating machines with speed range from 10 to 200 r/s--Measurement and evaluation of vibration severity in situ
WITHDRAWN published on 8.5.1989
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GB 11348.1-1989
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WITHDRAWN published on 1.1.1989
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