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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 ferromolybdenum—The atomic absorption spectrophotometric method for the determination of copper content
WITHDRAWN published on 15.4.1985
Selected format:Methods for chemical analysis of ferromolybdenum—The polarographic method for the determination of tin content
WITHDRAWN published on 20.9.1988
Selected format:Methods for chemical analysis of ferromolybdenum—The gravimetric method for the determination of silicon content
WITHDRAWN published on 8.4.1986
Selected format:Methods for chemical analysis of ferromoly bdenum—The molybdenum blue photometric method for the determination of phosphorus content
WITHDRAWN published on 8.4.1986
Selected format:Methods for chemical analysis of ferromolybdenum--The infrared absorption method for the determination of carbon content
WITHDRAWN published on 21.2.1988
Selected format:Methods for chemical analysis of Ferromolybdenum--The coulometric method for the determination of carbon content
WITHDRAWN published on 1.1.1988
Selected format:Methods for chemical analysis of ferromolybdenum—The infrared absorption mehtod for the determination of sulfur content
WITHDRAWN published on 21.2.1988
Selected format:Code for design of colliery building and structure of coal mine
WITHDRAWN published on 15.7.2010
Selected format:Standard for terminology,measure units and symbols in textile engineering
WITHDRAWN published on 15.7.2010
Selected format:Technical code for amelioration of the irrigation and drainage scheme
WITHDRAWN published on 15.7.2010
Selected format:Latest update: 2026-06-15 (Number of items: 2 282 497)
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