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Standards GB - Chinese national standards - Page 5863
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 13243-1991
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Test method for modulus of rupture of refractories containing carbon at elevated temperatures
WITHDRAWN published on 6.11.1991
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GB/T 13244-1991
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Test method for oxidation resistance of refractories containing carbon
WITHDRAWN published on 6.11.1991
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GB/T 13245-1991
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Chemical analysis method of refractories containing carbon—Determination of the total carbon—Combustion gravimetric method
WITHDRAWN published on 6.11.1991
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GB/T 13246-1991
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Refractories containing carbon—Determination of magnesium oxide content—CyDTA volumetric method
WITHDRAWN published on 6.11.1991
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GB/T 13247-1991
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Ferroalloys—Sampling and testing methods for determination of grain size
WITHDRAWN published on 6.11.1991
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GB/T 13248-1991
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Vulcanized rubber—Determination of manganese content—Sodium periodate photometric methods
WITHDRAWN published on 9.11.1991
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GB/T 13249-1991
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Rubber vulcanized—Determination of rubber content—Furnace tube pyrolytic method
WITHDRAWN published on 9.11.1991
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GB/T 13250-1991
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Vulcanized rubber—Determination of total sulfur content—Sodium peroxide fusion method
WITHDRAWN published on 9.11.1991
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GB 13251-1991
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Packing containers--Closure of drums
WITHDRAWN published on 9.11.1991
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GB/T 13251-2002
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Packing containers—Closure of drums
WITHDRAWN published on 28.8.2002
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