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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
Radiological protection requirements for using sealed radioactive sources
WITHDRAWN published on 23.5.1996
Selected format:Radiation protection standards for X-ray diffraction and fluorescence analysis equipment
WITHDRAWN published on 23.5.1996
Selected format:Standard for controlling radon and its daughters in underground space
WITHDRAWN published on 23.5.1996
Selected format:Radiological protection standards for industrial X-ray detection
WITHDRAWN published on 23.5.1996
Selected format:Radiological protection standards for unsealed radioactive sources logging in oil and gas-field
WITHDRAWN published on 23.5.1996
Selected format:Radiological protection standard for radioactive luminescent paint
WITHDRAWN published on 23.5.1996
Selected format:Test method for apparent density of moulding plastic materials
WITHDRAWN published on 15.9.1979
Selected format:Radiological protection standard for clinical nuclear medicine
WITHDRAWN published on 23.5.1996
Selected format:Radiological protection standards for the patient in clinical nuclear medicine
WITHDRAWN published on 23.5.1996
Selected format:Radiological protection standards for the patient in external beam radiological therapy
WITHDRAWN published on 23.5.1996
Selected format:Latest update: 2025-09-17 (Number of items: 2 234 360)
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