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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
Technical specification for steel bends
Execute Date: november 2026
Standard published on 30.4.2026
Selected format:Methods for the batch-flotation testing of fine coal
Standard published on 29.8.2025
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Additive manufacturing of metals—Qualification principles—Qualification of coordination personnel
Execute Date: august 2026
Standard published on 30.4.2026
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Methods for chemical analysis of synthetic diamond
Execute Date: november 2026
Standard published on 30.4.2026
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Agricultural sprayers—Recording of spray drift parameters
Execute Date: november 2026
Standard published on 30.4.2026
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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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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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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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Centrifugally cast steel and alloy products—Part 2: Heat-resistant materials
Execute Date: november 2026
Standard published on 30.4.2026
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Specification for information exchange in flight management and service of unmanned aircraft
Execute Date: september 2026
Standard published on 2.7.2026
Selected format:Latest update: 2026-07-15 (Number of items: 2 287 995)
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