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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
Fluorinated methanes for industrial uses—Determination of micro-amounts of water—Electrolytic method
WITHDRAWN published on 31.3.1989
Selected format:Test method for specific optical density of smoke generated by solid materials
WITHDRAWN published on 31.3.1989
Selected format:Test method for specific optical density of smoke generated by solid materials
WITHDRAWN published on 30.7.2008
Selected format:Specification for wheel of tower cranes
WITHDRAWN published on 1.1.1989
Selected format:Specification for cab of tower crane
WITHDRAWN published on 1.1.1989
Selected format:Test method for the crawler crane structures
WITHDRAWN published on 1.1.1989
Selected format:Hydraulic excavators—Test methods for reliability
WITHDRAWN published on 31.3.1989
Selected format:Hydraulic excavators--Operatorcontrols
WITHDRAWN published on 1.1.1989
Selected format:Hydraulic excavators--Track assembly
WITHDRAWN published on 1.1.1989
Selected format:Hydraulic excavators--Carrier rollers
WITHDRAWN published on 1.1.1989
Selected format:Latest update: 2026-04-28 (Number of items: 2 274 955)
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