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Standards GB - Chinese national standards - Page 7241
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 21181-2017
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Secondarily lead and lead alloy ingots
WITHDRAWN published on 12.7.2017
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GB/T 21182-2007
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Scraps of cemented carbide
WITHDRAWN published on 23.11.2007
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GB/T 21183-2007
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Zirconium and zirconium alloy sheet,strip and foil
WITHDRAWN published on 23.11.2007
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GB 2119-1980
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Determination of sulphur content in selenium--Distillation-reduction photometric method
WITHDRAWN published on 1.1.1980
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GB/Z 21193.1-2007
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Fossil-fired steam power stations - Part 1: Limiting controls
WITHDRAWN published on 14.11.2007
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GB/Z 21193.2-2008
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Fossil-fired steam power stations - Part 2: Drum-level control
WITHDRAWN published on 30.6.2008
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GB/Z 21193.3-2007
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Fossil-fired steam power stations - Part 3: Steam-temperature controls
WITHDRAWN published on 14.11.2007
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GB/T 21197-2007
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Line type optical fiber heat detector
WITHDRAWN published on 21.12.2007
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GB/T 21198.1-2007
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Determination of precious metals in precious metals jewellery alloys—Method using ICP spectrometry—Part 1:Platinum jewellery alloys—Determination of platinum—Method using a solution with yttrium as internal standard element
WITHDRAWN published on 12.11.2007
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GB/T 21198.2-2007
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Determination of precious metals in precious metals jewellery alloys—Method using ICP spectrometry—Part 2:Platinum jewellery alloys—Determination of platinum—Method using the intensity ratios of all minor constituents with reference to platinum
WITHDRAWN published on 12.11.2007
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