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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
Determination of paper board folding strength $(Shaw-bel’s)
WITHDRAWN published on 29.4.1979
Selected format:Liquefied petroleum gas steel mini-cylinders
WITHDRAWN published on 10.1.2001
Selected format:Electrical and audio requirements for the conference systems
WITHDRAWN published on 28.12.1994
Selected format:General technique specifications for cylinder valves
WITHDRAWN published on 26.12.1994
Selected format:General specifications of gas cylinder valves
WITHDRAWN published on 25.6.2009
Selected format:Outlet connections and sizes for cylinder valves
WITHDRAWN published on 26.12.1994
Selected format:Designation for gas cylinders
WITHDRAWN published on 26.12.1994
Selected format:Method for hydraulic burst test of gas cylinders
WITHDRAWN published on 26.12.1994
Selected format:Method for hydraulic burst test of gas cylinder
WITHDRAWN published on 30.12.2011
Selected format:Air cooled heat exchanger
WITHDRAWN published on 26.12.1994
Selected format:Latest update: 2026-01-21 (Number of items: 2 257 297)
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