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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
Acidity iron pellet for blast furnace
WITHDRAWN published on 30.12.2011
Selected format:Hydraulic bottle jacks
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Selected format:Test method for the performance of heat exchangers and heat exchange element—Part 1:General requirements
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Selected format:Test method for the performance of heat exchangers and heat exchange element—Part 2:Tubular heat exchanger
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Selected format:Test method for the performance of heat exchangers and heat exchange element—Part 3:Plate heat exchanger
WITHDRAWN published on 30.12.2011
Selected format:Test method for the performance of heat exchangers and heat exchange element—Part 4:Spiral heat exchanger
WITHDRAWN published on 30.12.2011
Selected format:Test method for the performance of heat exchangers and heat exchange element—Part 5:Heat transfer tube for tubular heat exchangers
WITHDRAWN published on 30.12.2011
Selected format:Test method for the performance of heat exchangers and heat exchange element—Part 6:Fing tube for air-cooled heat exchangers
WITHDRAWN published on 30.12.2011
Selected format:Test method for the performance of heat exchangers and heat exchange element—Part 7:Measurement of noise from air-cooled heat exchangers
WITHDRAWN published on 30.12.2011
Selected format:Test method for the performance of heat exchangers and heat exchange element—Part 8:Determination of industrial locale for heat exchangers
WITHDRAWN published on 30.12.2011
Selected format:Latest update: 2026-06-11 (Number of items: 2 281 927)
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