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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
Pre-stressed vibrohydropressed concrete pipe for water
WITHDRAWN published on 22.12.1994
Selected format:Core type prestressed concrete pipe for water
WITHDRAWN published on 22.12.1994
Selected format:Methods of daylighting measurements
WITHDRAWN published on 5.12.1985
Selected format:Method of daylighting measurements
WITHDRAWN published on 16.7.2008
Selected format:Method of daylighting measurements
WITHDRAWN published on 12.5.2017
Selected format:-
WITHDRAWN published on 1.1.1965
Selected format:Measurement methods for interior lighting
WITHDRAWN published on 5.12.1985
Selected format:Measurement methods for lighting
WITHDRAWN published on 16.7.2008
Selected format:Optimum temperature in air-conditioning room
WITHDRAWN published on 5.12.1985
Selected format:Thermal environmental conditions for human occupancy
WITHDRAWN published on 16.7.2008
Selected format:Latest update: 2026-05-04 (Number of items: 2 275 493)
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