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Standards GB - Chinese national standards - Page 187
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 12370-2025
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Bevel and hypoid gears—Terminology
Execute Date: may 2026
Standard published on 31.10.2025
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GB/T 12371-1990
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Bevel gears--Information of the dimensional data to be given on the drawing
Standard published on 26.6.1990
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GB/T 12371-2025
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Bevel gears—Information of the dimensional data to be given on the drawing
Execute Date: march 2026
Standard published on 29.8.2025
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GB/T 12372-1990
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Standard method for examination of nitrogen dioxide in air of residential areas--Modified Saltzman method
Standard published on 22.3.1990
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GB/T 12373-1990
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Standard sampling equipments of liquid absorbent methods for determining gaseous pollutants in air of residential areas
Standard published on 22.3.1990
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GB/T 12374-1990
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Standard method for examination of nitrate in air of residential areas--Reduction of the cadmium column-spectrophotometry of N-(1-naphthyl)ethylene diamine hydrochloride
Standard published on 22.3.1990
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GB/T 12375-1990
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Analytical method of tritium in water
Standard published on 9.6.1990
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GB/T 12376-1990
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Analytical method of polonium-210 in water--Method of preparing sample by electroplating
Standard published on 9.6.1990
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GB/T 12377-1990
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Analytical method of microquantity uranium in air by laser-fluoremetry
Standard published on 9.6.1990
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GB/T 12378-1990
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Analytical method of microquantity uranium in air by spectropho to fluoremetry after extraction with TBP
Standard published on 9.6.1990
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