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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
Oil impregnated paper capacitance graded wall bushings—Types and dimensions
WITHDRAWN published on 15.7.1991
Selected format:Types and dimensions of a.c. capacitance graded bushings
WITHDRAWN published on 30.6.2008
Selected format:Oil impregnated paper capacitance graded transformer bushings—Types and dimensions
WITHDRAWN published on 15.7.1991
Selected format:Isolating transformers and safety isolating transformers Requirements
WITHDRAWN published on 15.7.1991
Selected format:Choice and installation of cables for low-voltage power systems in ships
WITHDRAWN published on 15.7.1991
Selected format:Choice and installation of shipboard flexible coaxial cables
WITHDRAWN published on 15.7.1991
Selected format:Choice and installation of shipboard telecommunication cables and radio-frequency cables
WITHDRAWN published on 15.7.1991
Selected format:-
WITHDRAWN published on 1.1.1977
Selected format:Epoxide woven glass fabric laminated sheet
WITHDRAWN published on 21.12.1998
Selected format:Specification for industrial rigid laminated sheets based on thermosetting resins for electrical purposes—Part 3:Specifications for individual materials—Sheet 3:Requirements for rigid laminated sheets based on melamine resins
WITHDRAWN published on 21.5.2002
Selected format:Latest update: 2026-01-18 (Number of items: 2 257 146)
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