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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
Sponge titanium, titanium and titanium alloys—Determination of zirconium content—EDTA complexometric titration method
WITHDRAWN published on 4.11.1996
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WITHDRAWN published on 1.1.1984
Selected format:Sponge titanium, titanium and titanium alloys—Determination of carbon content—Combustion coulometric method
WITHDRAWN published on 4.11.1996
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WITHDRAWN published on 1.1.1984
Selected format:Sponge titanium, titanium and titanium alloys—Determination of hydrogen content—Vacuum heating gas chromatographic method
WITHDRAWN published on 4.11.1996
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WITHDRAWN published on 1.1.1984
Selected format:Sponge titanium, titanium and titanium alloys—Determination of oxygen content—Inert gas fusion coulometric method
WITHDRAWN published on 4.11.1996
Selected format:Sponge titanium, titanium and titanium alloys—Determination of magnesium content—Flame atomic absorption spectrometric method
WITHDRAWN published on 4.11.1996
Selected format:Sponge titanium, titanium and titanium alloys—Determination of tin content—Flame atomic absorption spectrometric method
WITHDRAWN published on 4.11.1996
Selected format:Sponge titanium, titanium and titanium alloys—Determination of molybdenum content—Thiocyanate differential spectrophotometric method
WITHDRAWN published on 4.11.1996
Selected format:Latest update: 2025-12-16 (Number of items: 2 252 193)
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