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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
Barite for drilling fluids
WITHDRAWN published on 1.1.1985
Selected format:Barite for drilling fluids
WITHDRAWN published on 1.1.1994
Selected format:Drilling fluid materials specifications
WITHDRAWN published on 30.12.2001
Selected format:Code for design of industrial recirculating cooling water treatment
WITHDRAWN published on 16.3.1995
Selected format:Code for design of industrial recirculating cooling water treatment
WITHDRAWN published on 25.10.2007
Selected format:Code for design of chimneys
WITHDRAWN published on 10.1.2003
Selected format:Code for design of chimneys
WITHDRAWN published on 25.12.2012
Selected format:Code for design of electric power supply systems
WITHDRAWN published on 12.7.1995
Selected format:Code for design of 10kV & under electric substation
WITHDRAWN published on 23.3.1994
Selected format:Code for design of low voltage electrial installations
WITHDRAWN published on 1.1.1995
Selected format:Latest update: 2025-12-24 (Number of items: 2 253 093)
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