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Standards GB - Chinese national standards - Page 301
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 13571-2025
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Vertical single spindle boring machines for woodworking—Vocabulary and accuracy
Standard published on 31.10.2025
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GB/T 13572-2008
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Woodworking machines—Planing machines for two-,three-or four-side dressing—Nomenclature and acceptance conditions
Standard published on 11.8.2008
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GB/T 13573-1992
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Circular saw blades for woodworking
Standard published on 17.7.1992
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GB/T 13574-1992
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Metal-cutting machine tools--Test code for static rigidity
Standard published on 17.7.1992
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GB/T 13575.1-2022
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Classical and narrow V-belt drivesPart 1: System based on datum width
Standard published on 30.12.2022
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GB/T 13575.2-2022
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Classical and narrow V-belt drives—Part 2: Effective system
Standard published on 30.12.2022
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GB/T 13576.1-2008
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Buttress threads with the flank angles of 3 and 30 degrees - Part 1: Profiles
Standard published on 30.7.2008
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GB/T 13576.2-2008
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Buttress threads with the flank angles of 3 and 30 degrees - Part 2: General plan
Standard published on 30.7.2008
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GB/T 13576.3-2008
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Buttress threads with the flank angles of 3 and 30 degrees - Part 3: Basic dimensions
Standard published on 30.7.2008
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GB/T 13576.4-2008
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Buttress threads with the flank angles of 3 and 30 degrees - Part 4: Tolerances
Standard published on 30.7.2008
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