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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
Standard practice for calibration and classification of extensometers
WITHDRAWN published on 1.1.1990
Selected format:Calibration of extensometers used in uniaxial testing
WITHDRAWN published on 22.2.2002
Selected format:Measurement methods for properties of plastic scintillator
WITHDRAWN published on 1.1.1990
Selected format:X and gama reference radiations for calibrating dosemeters and dose ratemeters and for determining their energy response
WITHDRAWN published on 1.1.1990
Selected format:X and gamma reference radiation for calibrating dose meters and doserate meters and for determining their response as a function of photon energy--Part 1:Radiation characteristics and production methods
WITHDRAWN published on 11.12.2000
Selected format:X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy--Part 2:Dosimetry for radiation protection over the energy ranges 8keV to 1.3 MeV and 4MeV to 9MeV
WITHDRAWN published on 4.2.2004
Selected format:X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy--Part 3:Calibration of area and personal dosemeters and the measurement of their response as a function of en
WITHDRAWN published on 4.2.2004
Selected format:Reference beta radiations for calibrating dosemeters and doseratemeters and for determining their response as a function of beta radiation energy
WITHDRAWN published on 30.12.1999
Selected format:-
WITHDRAWN published on 1.1.1990
Selected format:Reliability requirements and testing methods for cassette tape recorders
WITHDRAWN published on 30.12.1998
Selected format:Latest update: 2026-06-11 (Number of items: 2 281 927)
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