We need your consent to use the individual data so that you can see information about your interests, among other things. Click "OK" to give your consent.
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
Bonded abrasive products—General requirements
WITHDRAWN published on 17.9.2018
Selected format:Technical specification for bushing of 1000 kV AC system
WITHDRAWN published on 30.11.2009
Selected format:Technical specification for capacitor voltage transformers of 1 000 kV AC system
WITHDRAWN published on 30.11.2009
Selected format:Overvoltage and insulation coordination of 1000 kV UHV AC transmission project
WITHDRAWN published on 30.11.2009
Selected format:Technical specification of 1 000 kV single phase oil-immersed auto-transformer
WITHDRAWN published on 30.11.2009
Selected format:Technical specicaltion for oil-immersed shunt reactor of 1000 kV AC system
WITHDRAWN published on 30.11.2009
Selected format:Specification of metal-oxide surge arresters without gaps for 1000 kV AC system
WITHDRAWN published on 30.11.2009
Selected format:Preventive test standards of 1000 kV AC electrical equipments
WITHDRAWN published on 30.11.2009
Selected format:Technical guide on 1 000 kV AC system voltage and reactive power
WITHDRAWN published on 30.11.2009
Selected format:Minimum allowable values of energy efficiency and energy efficiency grades for household and similar microwave ovens
WITHDRAWN published on 30.6.2010
Selected format:Latest update: 2026-04-02 (Number of items: 2 270 295)
© Copyright 2026 NORMSERVIS s.r.o.