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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
Fire resistant shutter
WITHDRAWN published on 22.4.2005
Selected format:Halon fire extinguishing systems performance reguirements and test methods for selector valves
WITHDRAWN published on 20.1.1993
Selected format:Halon fire extinguishing system performance requirements and test methods for check valves
WITHDRAWN published on 20.1.1993
Selected format:Halon fire extinguishing systems performance requirements and test methods for valve actuators
WITHDRAWN published on 20.1.1993
Selected format:Halon fire extinguishing systems Performance requirements and test methods for pressure gauges
WITHDRAWN published on 20.1.1993
Selected format:Fundamental terminology of fire protection—Part 2
WITHDRAWN published on 20.1.1993
Selected format:General specifications for marine A class magnetic compass
WITHDRAWN published on 21.1.1993
Selected format:Solid electric insulating materials--Test methods of high-voltage small-current intermittent arc resistance
WITHDRAWN published on 21.7.1978
Selected format:General specification for thyratrons and gas-filled rectifier tubes
WITHDRAWN published on 21.1.1993
Selected format:Blank detail specification for thyratrons and gas-filled rectifier tubes
WITHDRAWN published on 21.1.1993
Selected format:Latest update: 2025-06-30 (Number of items: 2 206 311)
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