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Standards GB - Chinese national standards - Page 7797
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 4698.2-1984
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WITHDRAWN published on 1.1.1984
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GB/T 4698.2-1996
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Sponge titanium, titanium and titanium alloys—Determination of iron content—1,10-Phenanthroline spectrophotometric method
WITHDRAWN published on 4.11.1996
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GB/T 4698.20-1996
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Sponge titanium, titanium and titanium alloys—Determination of manganese content—Potassium periodate spectrophotometric method
WITHDRAWN published on 4.11.1996
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GB/T 4698.20-2017
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Sponge titanium, titanium and titanium alloys--Determination of manganese content--Potassium periodate spectrophotometric method
WITHDRAWN published on 1.1.2017
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GB/T 4698.21-1996
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Sponge titanium, titanium and titanium alloys—Determination of manganese, chromium, nickel, aluminum, molybdenum, tin, vanadium, yttrium, copper, zirconium content—Emission spectrographic method
WITHDRAWN published on 4.11.1996
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GB/T 4698.22-1996
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Sponge titanium, titanium and titanium alloys—Determination of niobium content—2-(5-Bromo-2-pyridylazo)-5-Diethylaminophenol spectrophotometric method
WITHDRAWN published on 4.11.1996
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GB/T 4698.23-1996
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Sponge titanium, titanium and titanium alloys—Determination of palladium content—Stannous choride—Potassium iodide spectrophotometric method
WITHDRAWN published on 4.11.1996
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GB/T 4698.24-1996
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Sponge titanium, titanium and titanium alloys—Determination of nickel content—Dimethylglyoxime spectrophotometric method
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GB/T 4698.25-1996
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Sponge titanium, titanium and titanium alloys—Determination chlorine content—Silver sulfide spectrophotometric method
WITHDRAWN published on 4.11.1996
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GB 4698.3-1984
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WITHDRAWN published on 1.1.1984
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