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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
Shell boilers—Part 4:Fabricationinspection and acceptance
WITHDRAWN published on 31.12.2013
Selected format:Shell boilers—Part 5:Safety appurtenances and instruments
WITHDRAWN published on 31.12.2013
Selected format:Shell boilers—Part 6:Combustion systems
WITHDRAWN published on 31.12.2013
Selected format:Shell boilers—Part 7:Installation
WITHDRAWN published on 31.12.2013
Selected format:Shell boilers—Part 8:Operation
WITHDRAWN published on 31.12.2013
Selected format:Standard guide for estimating uncertainties in dosimetry for radiation processing
WITHDRAWN published on 3.9.1996
Selected format:Direct fast scarlet 4BS
WITHDRAWN published on 1.1.1982
Selected format:The requirements for the competence of a radiation processing dosimetry calibration laboratory
WITHDRAWN published on 3.9.1996
Selected format:Electromechanical switches for use in electronic equipment--Part 5: Sectional specification for pushbutton switches
WITHDRAWN published on 9.9.1996
Selected format:Potentiometers for use in electronic equipment—Part 5:Sectional specification Single-turn rotary low-power wirewound and non-wirewound potentiometers
WITHDRAWN published on 9.9.1996
Selected format:Latest update: 2025-09-15 (Number of items: 2 233 685)
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