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Standards GB - Chinese national standards - Page 5203
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
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GB/T 7939.2-2024
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Connections for hydraulic fluid power—Test methods—Part 2: Quick-action couplings
Standard published on 28.5.2024
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GB/T 7939.3-2023
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Connections for hydraulic fluid power—Test methods—Part 3:Hose assemblies
Standard published on 23.5.2023
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GB/T 794-2021
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Strenthened cup head square neck bolts
Standard published on 31.12.2021
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GB/T 7940.1-2008
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Pneumatic fluid power - Five-port directional control valves - Part 1: Mounting interface surfaces without electrical connector
Standard published on 25.6.2008
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GB/T 7940.2-2008
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Pneumatic fluid power - Five-port directional control valves - Part 2: Mounting interface surfaces with optional electrical connector
Standard published on 25.6.2008
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GB/T 7941-2019
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Refrigeration test system
Standard published on 18.10.2019
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GB/T 7941-2019E
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Refrigeration test system
Standard published on 18.10.2019
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GB/T 7946-2015
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Electrical installation and safe operation of electric security fences
Standard published on 15.5.2015
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GB/T 7948-1987
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Test method for PV limit of plastics bearings
Standard published on 11.6.1987
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GB/T 7948-2024
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Plain bearings—Test method for PV limit of plastic bushes
Standard published on 29.9.2024
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