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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
Code for design of process of optical fiber component plant
Standard published on 27.8.2015
Selected format:Design code for potato storage facilities
Standard published on 27.8.2015
Selected format:Code for joint construction and sharing of telecommunications stations
Standard published on 27.8.2015
Selected format:Code for acceptance of wavelength division multiplexing (WDM) optical fiber transmission system engineering
Standard published on 27.8.2015
Selected format:Code for design of printed circuit board plant
Standard published on 27.8.2015
Selected format:Code for design of gas storage & transportation and distribution system for iron steel enterprises
Standard published on 27.8.2015
Selected format:Standard for assessment for prefabricated building
Standard published on 1.1.2017
Selected format:Code for construction of open caisson and pneumatic caisson
Standard published on 15.4.2016
Selected format:Technical code for gas-fired combined cooling,heating and power engineering
Standard published on 18.8.2016
Selected format:Code for construction and quality acceptance of industrial non-ferrous metallic piping engineering
Standard published on 30.9.2015
Selected format:Latest update: 2026-07-03 (Number of items: 2 286 013)
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