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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
Buttress threads with 3 and 30 degrees flank angle—Tolerances
WITHDRAWN published on 29.8.1992
Selected format:Mill for rubber and plastics
WITHDRAWN published on 17.7.1992
Selected format:Rubber and plactics calender
WITHDRAWN published on 17.7.1992
Selected format:Tyre shaping and curing press
WITHDRAWN published on 17.7.1992
Selected format:Tyre shaping and curing press
WITHDRAWN published on 13.3.2008
Selected format:Helical spring seriate sizes
WITHDRAWN published on 30.1.1993
Selected format:Minimum performance requirements on high fidelity headphones
WITHDRAWN published on 15.7.1992
Selected format:Measuring methods for parameters of infrared detectors
WITHDRAWN published on 15.7.1992
Selected format:Higher purity copper cathode
WITHDRAWN published on 1.1.1992
Selected format:Classification and specification for scraps and waste componet of aluminium and aluminium alloy
WITHDRAWN published on 9.7.1992
Selected format:Latest update: 2026-01-25 (Number of items: 2 257 482)
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