Standards GB - Chinese national standards - Page 4813

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 47571-2026

Methods for chemical analysis of synthetic diamond
Execute Date: november 2026

Standard published on 30.4.2026

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GB/T 47572-2026

Agricultural sprayers—Recording of spray drift parameters
Execute Date: november 2026

Standard published on 30.4.2026

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GB/T 47573.1-2026

Agricultural irrigation equipment—Guideline on the implementation of pressurized irrigation systems—Part 1General principles of irrigation
Execute Date: november 2026

Standard published on 30.4.2026

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GB/T 47573.2-2026

Agricultural irrigation equipment—Guideline on the implementation of pressurized irrigation systems—Part 2 : Drip irrigation
Execute Date: november 2026

Standard published on 30.4.2026

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GB/T 47574.1-2026

Centrifugally cast steel and alloy products—Part 1: General testing and tolerances
Execute Date: november 2026

Standard published on 30.4.2026

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