Standards GB - Chinese national standards - Page 7700

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GB/T 8753-1988 WITHDRAWN

Anodizing of aluminium and aluminium alloys—Estimation of loss of absorptive power of anodic oxide coatings after sealing—Dye spot test with prior acid treatment

WITHDRAWN published on 25.2.1988

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GB/T 8753.1-2005 WITHDRAWN

Anodizing of aluminium and aluminium alloys—Assessment of quality of sealed anodic oxide coatings—Part 1:Phosphoric acid/chromic acid test without nitric acid predip

WITHDRAWN published on 4.7.2005

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GB/T 8753.2-2005 WITHDRAWN

Anodizing of aluminium and aluminium alloys—Assessment of quality of sealed anodic oxide coatings—Part 2:Phosphoric acid/chromic acid test with nitric acid predip

WITHDRAWN published on 4.7.2005

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