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Standards GB - Chinese national standards - Page 4615
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 46075.1-2025
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Acceptance inspection of electron beam welding machines—Part 1: Principles and acceptance conditions
Standard published on 29.8.2025
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GB/T 46075.2-2025
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Acceptance inspection of electron beam welding machines—Part 2: Measurement of accelerating voltage characteristics
Standard published on 29.8.2025
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GB/T 46075.3-2025
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Acceptance inspection of electron beam welding machines—Part 3: Measurement of beam current characteristics
Standard published on 29.8.2025
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GB/T 46075.4-2025
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Acceptance inspection of electron beam welding machines—Part 4: Measurement of welding speed
Standard published on 29.8.2025
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GB/T 46075.5-2025
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Acceptance inspection of electron beam welding machines—Part 5: Measurement of run-out accuracy
Standard published on 29.8.2025
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GB/T 46075.6-2025
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Acceptance inspection of electron beam welding machines—Part 6: Measurement of stability of spot position
Standard published on 29.8.2025
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GB/T 46076-2025
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General technical requirements for automatic vacuum skin packaging machine
Standard published on 29.8.2025
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GB/T 46077-2025
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General technical requirements for automatic blister-cartoning bloc
Standard published on 29.8.2025
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GB/T 46078-2025
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Maglev power technology—Vocabulary
Standard published on 29.8.2025
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GB/T 46079-2025
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Additive manufacturing of polymers—Feedstock materials—Qualification of materials for laser-based powder bed fusion of parts
Standard published on 29.8.2025
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