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Standards GB - Chinese national standards - Page 945
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 18449.1-2024
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Metallic materials—Knoop hardness test—Part 1: Test method
Standard published on 28.5.2024
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GB/T 18449.2-2012
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Metallic materials - Knoop hardness test - Part 2Verification and calibration of testing machines
Standard published on 31.12.2012
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GB/T 18449.3-2012
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Metallic materials - Knoop hardness test - Part 3Calibration of reference blocks
Standard published on 31.12.2012
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GB/T 18449.4-2022
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Metallic materials—Knoop hardness test—Part 4: Tables of hardness values
Standard published on 9.3.2022
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GB/T 1845.1-2016
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Plastics—Polyethylene(PE) moulding and extrusion materials—Part 1: Designation system and basis for specifications
Standard published on 13.10.2016
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GB/T 1845.2-2021
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Plastics—Polyethylene (PE) moulding and extrusion materials—Part 2:Preparation of test specimens and determination of properties
Standard published on 20.8.2021
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GB/T 18451.1-2022
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Wind energy generation systems—Design requirements
Standard published on 12.10.2022
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GB/T 18451.2-2025
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Wind energy generation systems—Power performance measurements of electricity producing wind turbines
Standard published on 5.10.2025
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GB 18452-2001
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Crusher equipment safety requirements
Standard published on 15.9.2001
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GB/T 18453-2001
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Cranes--Maintenance manual--Part 1:General
Standard published on 15.9.2001
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