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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
Nickel base brazing filler metals—Part 1Solid brazing filler metals
Execute Date: october 2025
Standard published on 28.3.2025
Selected format:Thermal test method for gas pass heat recovery boiler
Standard published on 30.12.2011
Selected format:Steam converting valves for power station
Standard published on 6.2.2018
Selected format:Control valves for power station
Standard published on 31.1.2008
Selected format:The methods of performance test for water chilling (heat pump) packages using the vaper compression cycle
Standard published on 24.6.2014
Selected format:Special taps of taper threads for gas cylinders
Standard published on 30.12.2011
Selected format:Three screw pumps
Standard published on 18.10.2019
Selected format:Safety requirements for air handling units
Standard published on 31.3.1989
Selected format:Stationary air compressors—Safety rules and code of practice
Standard published on 31.12.2021
Selected format:Compressed air dryers - Part 1Specifications and testing
Standard published on 31.12.2012
Selected format:Latest update: 2025-08-24 (Number of items: 2 213 294)
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