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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
Water-tube Boilers—Part 3:Structure design
WITHDRAWN published on 31.12.2013
Selected format:Water-tube boilers—Part 4:Strength calculation of pressure parts
WITHDRAWN published on 31.12.2013
Selected format:Water-tube Boilers—Part 5:Fabrication
WITHDRAWN published on 31.12.2013
Selected format:Water-tube Boilers—Part 6:Inspection,testing and acceptance
WITHDRAWN published on 31.12.2013
Selected format:Water-tube boilers—Part 7:Safety appurtenances and instruments
WITHDRAWN published on 31.12.2013
Selected format:Water-tube Boilers—Part 8:Installation and operation
WITHDRAWN published on 31.12.2013
Selected format:Strength calculation of pressure parts for shell boilers
WITHDRAWN published on 3.9.1996
Selected format:Shell boilers—Part 1:General requiments
WITHDRAWN published on 31.12.2013
Selected format:Shell boilers—Part 2:Material
WITHDRAWN published on 31.12.2013
Selected format:Shell boilers—Part 3:Design and strength calculation
WITHDRAWN published on 31.12.2013
Selected format:Latest update: 2025-09-15 (Number of items: 2 233 685)
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