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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
Standard test method for spark discharge atomic emission spectrometric analysis of carbon and low-Alloy steel(routine method)
WITHDRAWN published on 11.9.2002
Selected format:Metals—Rotating bar bending fatigue testing
WITHDRAWN published on 9.4.1984
Selected format:Metallic materials—Fatigue testing—Rotating bar bending method
WITHDRAWN published on 5.8.2008
Selected format:Metallic materials--Tensile testing at elevated temperature
WITHDRAWN published on 1.1.1984
Selected format:Metallic materials—Tensile testing at elevated temperature
WITHDRAWN published on 10.10.1995
Selected format:Metallic materials—Tensile testing at elevated temperature
WITHDRAWN published on 18.8.2006
Selected format:Testing method for thermal expansion characteristic parameters of metallic materials
WITHDRAWN published on 1.11.1999
Selected format:Metallic materials--Vickers hardness test
WITHDRAWN published on 1.1.1984
Selected format:Metallic materials—Vickers hardness test—Part 1:Test method
WITHDRAWN published on 11.11.1999
Selected format:Metallic materials—Vickers hardness test—Part 1:Test method
WITHDRAWN published on 25.6.2009
Selected format:Latest update: 2025-11-03 (Number of items: 2 242 248)
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