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Standards GB - Chinese national standards - Page 5217
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 589-2026
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Marine bronze flanged check valves
Execute Date: january 2027
Standard published on 28.9.2026
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GB/T 5894-2015
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Terminology of mechanical seal
Standard published on 10.12.2015
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GB/T 5894-2015E
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Terminology of mechanical seal
Standard published on 10.12.2015
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GB/T 5898-2008
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Hand-held non-electric power tools - Noise measurement code - Engineering method(grade 2)
Standard published on 9.7.2008
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GB/T 590-2008
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Marine cast iron flanged stop valves
Standard published on 4.8.2008
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GB/T 590-2026
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Marine cast iron flanged stop valves
Execute Date: january 2027
Standard published on 28.9.2026
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GB/T 5900.1-2021
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Machine tools—Connecting dimensions of spindle noses and work holding chucks—Part 1: Conical connection
Standard published on 21.5.2021
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GB/T 5900.2-2022
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Machine tools—Connecting dimensions of spindle noses and work holding chucks—Part 2: Camlock type
Standard published on 11.7.2022
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GB/T 5900.3-2022
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Machine tools—Connecting dimensions of spindle noses and work holding chucks—Part 3:Bayonet type
Standard published on 11.7.2022
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GB/T 5900.4-2022
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Machine tools—Connecting dimensions of spindle noses and work holding chucks—Part 4:Cylindrical connection
Standard published on 11.7.2022
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