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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
Hydraulic pressure test of glass-lined equipments
WITHDRAWN published on 24.6.1987
Selected format:Hydraulic pressure test of glass-lined equipments
WITHDRAWN published on 13.5.2005
Selected format:Air seal test method of glass-lined equipments
WITHDRAWN published on 24.6.1987
Selected format:Air seal test method of glass-lined equipments
WITHDRAWN published on 13.5.2005
Selected format:Nominal volume and nominal diameter for glass-lined vessel
WITHDRAWN published on 1.7.1987
Selected format:Norminal capacity and diameter of glass lined vessel
WITHDRAWN published on 28.12.2006
Selected format:Norminal capacity and diameter of glass-lined equipment
WITHDRAWN published on 31.12.2013
Selected format:Hardmetals—Vickers hardness test
WITHDRAWN published on 26.6.1987
Selected format:The method for determining the intergranular corrosion of aluminium alloy
WITHDRAWN published on 26.6.1987
Selected format:Test method for intergranular corrosion of aluminium alloy
WITHDRAWN published on 4.7.2005
Selected format:Latest update: 2025-07-11 (Number of items: 2 208 012)
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