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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
Casting aluminium alloys--Technical specifications
WITHDRAWN published on 1.1.1986
Selected format:Casting aluminium alloys
WITHDRAWN published on 14.12.1995
Selected format:Hygienic standard for water consumption in rural areas
WITHDRAWN published on 10.2.1989
Selected format:Standard method for hygienic examination of nitrobenzene in air of residential areas—Gas chromatography
WITHDRAWN published on 21.9.1989
Selected format:Standard method for hygienic examination of pyridine in air of residential areas—Cyanogen chloride-barbituric acid apectrophotometric method
WITHDRAWN published on 21.9.1989
Selected format:Standard method for hygienic examination of inorganic sulfate in air of residential areas—Ion-chromatography
WITHDRAWN published on 21.9.1989
Selected format:Standard method for hygienic examination of methylparathion in air of residential areas—Gas chromatography
WITHDRAWN published on 21.9.1989
Selected format:Standard method for hygienic examination of beryllium in air of residential areas—Morin fluorescence spectrophotometric method
WITHDRAWN published on 21.9.1989
Selected format:Standard method for hygienic examination of chlorine in air of residential areas — Methyl orange spectrophotometric method
WITHDRAWN published on 21.9.1989
Selected format:Standard method for hygienic examination of benzene, toluene and xylene in air of residential areas—Gas chromatography
WITHDRAWN published on 21.9.1989
Selected format:Latest update: 2026-03-24 (Number of items: 2 269 385)
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