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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
Roll-forming rectangle steel tube for tower crane
WITHDRAWN published on 10.1.2011
Selected format:Ductile iron pipes,fittings and accessories for sewage applications
WITHDRAWN published on 10.1.2011
Selected format:Determination for Copper() octaalkoxyl-substituted phthalocyanine on graphite surface (scanning tunneling microscope)
WITHDRAWN published on 10.1.2011
Selected format:Guidelines for instruction of marine diesel engines
WITHDRAWN published on 10.1.2011
Selected format:Object lens for microscopes series
WITHDRAWN published on 1.1.1981
Selected format:Microscopes—Objectives
WITHDRAWN published on 13.8.1996
Selected format:Microscopes—Objectives
WITHDRAWN published on 8.5.2006
Selected format:Petroleum products—Determination of flash point—Closed cup method
WITHDRAWN published on 9.3.1983
Selected format:Determination of flash point—Pensky-Martens closed cup method
WITHDRAWN published on 25.8.2008
Selected format:General requirements for testing machines
WITHDRAWN published on 29.8.1992
Selected format:Latest update: 2026-03-27 (Number of items: 2 269 573)
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