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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 method for using radiochromic film and polymethylmethacrylate dosimetry systems to measure absorbed dose
WITHDRAWN published on 4.5.1994
Selected format:Miniature screw threads—Profiles
WITHDRAWN published on 3.5.1994
Selected format:Miniature screw threads—General plan
WITHDRAWN published on 3.5.1994
Selected format:Miniature screw threads—Basic dimensions
WITHDRAWN published on 3.5.1994
Selected format:Miniature screw threads—Tolerances
WITHDRAWN published on 3.5.1994
Selected format:Miniature screw threads—Limits of sizes
WITHDRAWN published on 3.5.1994
Selected format:Permissible stamping varitions in dimensions without tolerance indication
WITHDRAWN published on 3.5.1994
Selected format:Permissible stamping variations in dimensions without tolerance indication
WITHDRAWN published on 18.4.2007
Selected format:Evaluation method on cast surface roughness
WITHDRAWN published on 3.5.1994
Selected format:Reference gasoline(leaded regular)
WITHDRAWN published on 5.5.1994
Selected format:Latest update: 2026-04-01 (Number of items: 2 270 267)
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