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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
Rubber internal mixers & plastics internal mixers
Standard published on 26.9.2010
Selected format:thread rolling cylindrical dies
Standard published on 3.6.2008
Selected format:Petroleum and natural gas industries—Steel pipe for pipeline transportation systems
Standard published on 27.11.2023
Selected format:Information processing--Recording characteristics of instrumentation magnetic tape (includingtelemetry systems)--Interchange requirements
Standard published on 5.9.1988
Selected format:Information processing--General purpose hubs and reels with 76mm centre hole for magnetic tape usedin interchange instrumentation applications
Standard published on 5.9.1988
Selected format:Information processing--Precision reels for magnetic tape used in interchange instrumentation applications
Standard published on 5.9.1988
Selected format:Information processing--Unrecorded 12.7mm (0.5in)wide magnetic tape for information interchange-32ftpmm(800 ftpi)NRZ1126ftpmm(3200ftpi)phase encoded and 356ftpmm(9042ftpi) NRZ1
Standard published on 5.9.1988
Selected format:Information processing--Unrecorded magnetic tapes for interchange instrumentation applications -- Generaldimensional requirements
Standard published on 5.9.1988
Selected format:Information processing--General purpose reels with 8mm centre hole for magnetic tape for interchange instrumentation applications
Standard published on 5.9.1988
Selected format:Thread rolling flat dies
Standard published on 3.6.2008
Selected format:Latest update: 2026-04-19 (Number of items: 2 274 482)
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