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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
Surface examination method of the metal deposits and conversion coatings for the light industrial products
WITHDRAWN published on 1.1.1986
Selected format:Thickness testing method of the metal deposits for the light industrial products--Timekeeping of liquid flow method
WITHDRAWN published on 1.1.1986
Selected format:Thickness testing method of the metal deposits and aluminum oxide films for the light industrial products--Weighing method
WITHDRAWN published on 1.1.1986
Selected format:Thickness testing method of the metal deposits and conversion coatings for the light industrial products--Metallographic microscopic method
WITHDRAWN published on 1.1.1986
Selected format:-
WITHDRAWN published on 1.1.1976
Selected format:Marine bronze and cast iron flanged cocks
WITHDRAWN published on 24.5.1993
Selected format:Thickness testing method of the metal deposits for the light industrial products--Spot test
WITHDRAWN published on 1.1.1986
Selected format:Thickness testing method of the metal deposits and conversion coatings for the light industrial products--Beta Ray backscattering
WITHDRAWN published on 1.1.1986
Selected format:Wear-resistant testing method of the metal deposits and conversion coatings for the light industrial products
WITHDRAWN published on 1.1.1986
Selected format:Adhesion testing method of the metal deposits for the light industrial products
WITHDRAWN published on 1.1.1986
Selected format:Latest update: 2026-04-26 (Number of items: 2 274 794)
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