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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
Methods for chemical analysis of ironsteel and alloy--The direct oscillopolarographic method for the determination of tellerium content
WITHDRAWN published on 12.5.1987
Selected format:Iron,steel and alloy—Determination of tellurium content—Oscillo-polarographic method
WITHDRAWN published on 13.5.2008
Selected format:Methods for chemical analysis of ironsteel and alloy--The sulfhydryl cotton fiber separation-oscillopolarographic method for the determination of tellurium content
WITHDRAWN published on 12.5.1987
Selected format:Methods for chemical analysis of ironsteel and alloy--The extraction-absorption catalytic polarographic method for the determination of cadmium content
WITHDRAWN published on 12.5.1987
Selected format:Methods for chemical analysis of iron, steel and alloy—The sodium arsenite-sodium nitrite titrimetric method for the determination of phosphorus content
WITHDRAWN published on 3.4.1987
Selected format:Methods for chemical analysis of iron,steel and alloy—The sodium(potassium)periodate photometric method for the determination of manganese content
WITHDRAWN published on 5.2.1988
Selected format:Methods for chemical analysis of iron,steel and alloy—The flame atomic absorption spectrometric method forthe determination of manganese content
WITHDRAWN published on 5.2.1988
Selected format:Methods for chemical analysis of iron,steel and alloy—The flame atomic absorption spectrometric method for the determination of cobalt content
WITHDRAWN published on 5.2.1988
Selected format:Methods for chemical analysis of iron, steel and alloy—The reducing distillation-methylene blue photometric method for the determination of sulfur content
WITHDRAWN published on 31.3.1989
Selected format:Methods for chemical analysis of iron,steel and alloy The gas- volumetric method after combustion in the pipe furnace for the determination of carbon content
WITHDRAWN published on 17.3.1997
Selected format:Latest update: 2024-05-03 (Number of items: 2 896 946)
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