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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
Characteristics of special quality leasedcircuits with special bandwidth conditioning
WITHDRAWN published on 31.3.1989
Selected format:Characteristics of special quality leasedciucuits with basic bandwidth conditioning
WITHDRAWN published on 31.3.1989
Selected format:Technical requirements and test methods for automatic toll terminal equipment
WITHDRAWN published on 1.1.1989
Selected format:Energy consumption standard in forging production
WITHDRAWN published on 31.3.1989
Selected format:Operational management of centrifugal, mixed flow and axial pumps
WITHDRAWN published on 31.3.1989
Selected format:The administration standard of the firingfurnace for daily use enamelware
WITHDRAWN published on 31.3.1989
Selected format:Crude oil--Determination of saturated vapour pressure--Reference method
WITHDRAWN published on 31.3.1989
Selected format:Crude oil—Determination of saturated vapour pressure—Reference methods
WITHDRAWN published on 18.6.2003
Selected format:Standard test method for determination of vapor pressure of crude oil:VPCRx(expansion method)
WITHDRAWN published on 29.9.2011
Selected format:End mills with morse taper shank
WITHDRAWN published on 1.1.1985
Selected format:Latest update: 2026-01-26 (Number of items: 2 257 479)
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