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Standards GB - Chinese national standards - Page 640

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 16668-2010

General technical specifications for powder extinguishing system and components

Standard published on 26.9.2010

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GB 16668-2025

General technical specifications for powder extinguishing system and components
Execute Date: august 2026

Standard published on 1.8.2025

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GB 16669-2010

General technical specifications for components of carbon dioxide fire extinguishing systems

Standard published on 26.9.2010

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GB 16669-2026

General technical specifications for carbon dioxide fire extinguishing systems and components
Execute Date: february 2027

Standard published on 28.1.2026

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GB 16670-2006

Cabinet gas fire extinguishing equipment

Standard published on 1.3.2006

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GB 16670-2025

Cabinet gas fire extinguishing equipment
Execute Date: july 2026

Standard published on 30.6.2025

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GB/T 16671-2018

Geometrical product specifications (GPS)—Geometrical tolerancing—Maximum material requirement (MMR), least material requirement (LMR) and reciprocity requirement (RPR)

Standard published on 17.9.2018

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electronic design (pdf) (814.80 USD)

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GB/T 16672-1996

Welds--Working positions--Definitionsof angles of slope and rotation

Standard published on 18.12.1996

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