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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
Terminology for railway passenger transport
WITHDRAWN published on 11.12.1991
Selected format:Vocabulary for railway passenger transport
WITHDRAWN published on 10.11.2010
Selected format:General rules for safety and environmental conservation of forging production
WITHDRAWN published on 1.1.1991
Selected format:Geometrical tolerane--Positional tolerancing
WITHDRAWN published on 1.1.1991
Selected format:Geometrical product specifications(GPS)—Geometrical tolerancing—Positional tolerancing
WITHDRAWN published on 15.4.2003
Selected format:Metallographic grading atlas and assessing method for steel die forgings
WITHDRAWN published on 13.12.1991
Selected format:The method of hardness testing on iron and steel with file
WITHDRAWN published on 13.12.1991
Selected format:Optical drawings
WITHDRAWN published on 13.12.1991
Selected format:Terminology of heat treatment installation
WITHDRAWN published on 13.12.1991
Selected format:Noise emitted by machinery and equipment—Guidelines for the preparation of test codes of engineering grade requiring noise measurements at the operator""s or bystander""s position
WITHDRAWN published on 14.12.1991
Selected format:Latest update: 2026-04-19 (Number of items: 2 274 482)
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