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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
Petroleum products and lubricants—Determination of acid number—Potentiometric titration method
WITHDRAWN published on 28.8.2000
Selected format:Petroleum oils and synthetic fluids--Determination of demulsibility characteristics
WITHDRAWN published on 26.2.1987
Selected format:Pipe threads where pressure-tight joints are made on the threads
WITHDRAWN published on 1.1.1987
Selected format:Plain bearings—Thin-walled flanged half bearings—Dimensions, tolerances and methods of checking
WITHDRAWN published on 24.2.1987
Selected format:Plain bearings—Thin-walled half bearings with or without flange—Tolerances,design features and methods of test
WITHDRAWN published on 25.8.2008
Selected format:Gunnybags—Technical requirements
WITHDRAWN published on 19.11.1987
Selected format:Methods of measurement for electrical and mechanical properties of compact cassette tape
WITHDRAWN published on 1.1.1987
Selected format:Editorial nominating method for the model designation of packaging machinery
WITHDRAWN published on 26.2.1987
Selected format:Editorial nominationg method for the model designation of packaging machinery
WITHDRAWN published on 5.11.2003
Selected format:Inspection methods for hull of ferrocement ship
WITHDRAWN published on 27.2.1987
Selected format:Latest update: 2026-10-27 (Number of items: 2 208 060)
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