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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
Test methods for electroheat installations—Indirect resistance furnaces
WITHDRAWN published on 10.12.1988
Selected format:Test methods for electroheat installations—Part 6:Industrial microwave heating installations—Test methods for the determination of power output
WITHDRAWN published on 24.9.2008
Selected format:Test methods for electro heat installations—Part 7:Electroheat installations with electron guns
WITHDRAWN published on 4.2.2004
Selected format:Basic specifications for electroheat installations--General
WITHDRAWN published on 5.9.1988
Selected format:Basic specifications for electro heat installations—Part 1:General
WITHDRAWN published on 26.8.2005
Selected format:Basic specifications for electroheat installations--Steelmaking arc furnaces
WITHDRAWN published on 10.12.1988
Selected format:Basic specifications for electroheat installations--Induction electroheat installations
WITHDRAWN published on 10.12.1988
Selected format:Basic specifications for electro heat installations—Part 3:Induction electro heat installations
WITHDRAWN published on 26.8.2005
Selected format:Basic specifications for electroheat installations--Indirect resistance furnaces
WITHDRAWN published on 10.12.1988
Selected format:Mechanical vibration of certain machines with shaft heights 56mm and higher—Measurement,evaluation and limits of vibration
WITHDRAWN published on 3.1.2000
Selected format:Latest update: 2026-06-12 (Number of items: 2 281 969)
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