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Standards GB - Chinese national standards - Page 6936
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 20165-2012
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Rare earth polishing powder
WITHDRAWN published on 5.11.2012
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GB/T 20166.1-2006
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Chemical analysis methods of rare earth polishing powder—Determination of cerium oxide content—Titrimetric analysis method
WITHDRAWN published on 13.4.2006
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GB/T 20166.2-2006
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Chemical analysis methods of rare earth polishing powder—Determination fluorine content—Ion selective electrode analysis
WITHDRAWN published on 13.4.2006
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GB/T 20167-2006
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Physical test method of rare earth polishing powder—Determination of burnishing mass—Gravimetric analysis method
WITHDRAWN published on 13.4.2006
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GB/T 20168-2006
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Rapidly-quenched neodymium iron boron permanent magnetic powder
WITHDRAWN published on 13.4.2006
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GB/T 20169-2006
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Mixed rare earth oxide of ion-absorpted type rare earth ore
WITHDRAWN published on 13.4.2006
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GB/T 20173-2006
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Petroleum and natural gas industries—Pipeline transportation systems—Pipeline valves
WITHDRAWN published on 29.3.2006
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GB/T 20173-2013
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Petroleum and natural gas industriesPipeline transportation systemsPipeline valves
WITHDRAWN published on 31.12.2013
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GB/T 20174-2006
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Petroleum and natural gas industries—Drilling and production equipment—Drill-through equipment
WITHDRAWN published on 29.3.2006
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GB/T 20175-2006
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Surface chemical analysis-Sputter depth profiling-Optimization using layered systems as reference materials
WITHDRAWN published on 27.3.2006
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