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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
Earth-moving machinery—Operator enclosure environment—Part 5:Windscreen defrosting system test method
WITHDRAWN published on 19.9.2005
Selected format:Earth-moving machinery—Operator enclosure environment—Part 6:Determination of effect of solar heating on operator enclosure
WITHDRAWN published on 19.9.2005
Selected format:Hydraulic fluid power—Fatigue pressure testing of metal pressure-containing envelopes—Part 1:Test method
WITHDRAWN published on 19.9.2005
Selected format:Worm gears-Geometry of worms-Name plates for worm gear units,centre distances,information to be supplied to gear manufacturer by the purchaser
WITHDRAWN published on 19.9.2005
Selected format:Non-destructive testing—Penetrant flaw detectors—General technical requirements
WITHDRAWN published on 19.9.2005
Selected format:Non-destructive testing—Radiography of welds and viewing conditions for films—Utilization of recommended patterns of image quality indicators
WITHDRAWN published on 19.9.2005
Selected format:Technical requirements for grid connection of PV system
WITHDRAWN published on 11.11.2005
Selected format:Test method for physical-chemical properties of electrical carbon product--Technical instruction of machining sample
WITHDRAWN published on 1.1.1988
Selected format:Test method for physical-chemical properties of electrical carbon product--Radial mechanical strength
WITHDRAWN published on 1.1.1988
Selected format:Test method for physical-chemical properties of electrical carbon product--Room temperature resistance and deformation of carbon pile
WITHDRAWN published on 1.1.1988
Selected format:Latest update: 2025-12-25 (Number of items: 2 253 105)
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