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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
Straight thread elbow for butt joints—Body
WITHDRAWN published on 17.6.1983
Selected format:Male elbow for butt joints—Assembly
WITHDRAWN published on 17.6.1983
Selected format:Male elbow for butt joints—Body
WITHDRAWN published on 17.6.1983
Selected format:Bite type tube fittings—Nuts
WITHDRAWN published on 17.6.1983
Selected format:Bite type tube fittings—Nuts for butt joints
WITHDRAWN published on 17.6.1983
Selected format:Bite type tube fittings--Pressure bush for butt joints
WITHDRAWN published on 17.6.1983
Selected format:Bite type tube fittings--Tipping washer
WITHDRAWN published on 17.6.1983
Selected format:Bite type tube fittings—Hexagon thin nuts
WITHDRAWN published on 17.6.1983
Selected format:Ferrule
WITHDRAWN published on 17.6.1983
Selected format:Specification for bite type tube fittings
WITHDRAWN published on 17.6.1983
Selected format:Latest update: 2026-01-18 (Number of items: 2 257 146)
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