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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
General technical specifications for marine electrical measurement and control instruments
WITHDRAWN published on 7.12.1987
Selected format:Method of breaking tensile test for steel wire ropes
WITHDRAWN published on 7.12.1987
Selected format:Method of breaking tensile test for steel wire ropes
WITHDRAWN published on 1.3.2006
Selected format:Steel wire ropes—Determination of measured breaking force
WITHDRAWN published on 9.6.2014
Selected format:Carbides in high speed steel—Quantitative phase analysis—Method of X-ray diffractometer
WITHDRAWN published on 7.12.1987
Selected format:The lattice constant determination of metals—Method of X-ray diffractometer
WITHDRAWN published on 7.12.1987
Selected format:The surface of cold drawn rounds steel—Method for the ultrasonic inspection
WITHDRAWN published on 17.12.2001
Selected format:Retained austenite in steel—Quantitative determination—Method of X-ray diffractometer
WITHDRAWN published on 7.12.1987
Selected format:Metallic materials—Drop-weight tear tests of ferritic steels
WITHDRAWN published on 7.12.1987
Selected format:Test method for drop-weight tear tests of steel products
WITHDRAWN published on 25.10.2007
Selected format:Latest update: 2024-12-23 (Number of items: 2 217 157)
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