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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
Electric rotary hammers
WITHDRAWN published on 2.11.2001
Selected format:Switchs for electric tools
WITHDRAWN published on 1.1.1987
Selected format:Gaseous hydrogen
WITHDRAWN published on 1.1.1987
Selected format:Pure hydrogen and high pruity hydrogen and ultra pure hydrogen
WITHDRAWN published on 20.12.1995
Selected format:Methods of the test the gaseous hydrogen
WITHDRAWN published on 1.1.1987
Selected format:Argon for glow lamp
WITHDRAWN published on 1.1.1987
Selected format:Test methods of argon for glow lamp
WITHDRAWN published on 1.1.1987
Selected format:Guide to the lightning impulse and switching impulse testing of power transformers and reactors
WITHDRAWN published on 16.3.1987
Selected format:Pulps--Determination of pentosan content
WITHDRAWN published on 22.2.1989
Selected format:Guidance for lightning protection for electronic equipments
WITHDRAWN published on 17.3.1987
Selected format:Latest update: 2026-04-02 (Number of items: 2 270 295)
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