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Standards GB - Chinese national standards - Page 963
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 1859.1-2026
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Reciprocating internal combustion engines—Measurement of sound power level using sound pressure—Part 1: Engineering method
Standard published on 28.1.2026
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GB/T 1859.2-2026
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Reciprocating internal combustion engines—Measurement of sound power level using sound pressure—Part 2: Survey method
Standard published on 28.1.2026
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GB/T 1859.3-2015
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Reciprocating internal combustion engines—Measurement of sound power level using sound pressure—Part 3: Precision methods for hemi-anechoic rooms
Standard published on 10.12.2015
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GB/T 1859.4-2025
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Reciprocating internal combustion engines—Measurement of sound power level using sound pressure—Part 4: Survey method for use in situ
Standard published on 1.8.2025
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GB/T 18590-2025
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Corrosion of metals and alloys—Guidelines for the evaluation of pitting corrosion
Standard published on 29.8.2025
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GB/T 18591-2001
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Welding--Guidance on the measurement of preheating temperatureinterpass temperature and preheat maintenance temperature
Standard published on 17.12.2001
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GB/T 18592-2001
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Metallic coating--Hot dipped aluminium coatings on ferrous articles--Specification
Standard published on 17.12.2001
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GB/T 18593-2010
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Anti-corrosive painting of fusion bonded epoxy coating powders
Standard published on 9.8.2010
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GB/T 18594-2001
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Technical product documentation--Lettering CAD lettering of the latin alphabet numerals and marks
Standard published on 17.12.2001
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GB/T 18595-2014
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Equipment for general lighting purposes-EMC immunity requirements
Standard published on 22.12.2014
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