Standards GB - Chinese national standards - Page 291

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 13498-2017

Terminology for high-voltage direct current(HVDC) transmission

Standard published on 29.12.2017

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GB/T 13499-2002

Power transformers—Application guide

Standard published on 28.2.2002

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GB/Z 135-2025

Corrosion of metals and alloys—Corrosion tests in artificial atmospheres—Guidelines for selection of accelerated corrosion test for product qualification

Standard published on 3.12.2025

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GB 1350-2009

Paddy

Standard published on 28.3.2009

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