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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
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WITHDRAWN published on 17.6.1983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WITHDRAWN published on 17.6.1983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WITHDRAWN published on 17.6.1983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:Hot rolled steel sheet and strip of alloy structure steel
WITHDRAWN published on 4.6.2019
Selected format:Welded corrosion resistant alloy pipes and tubes
WITHDRAWN published on 30.8.2019
Selected format:Corrosion-resistant alloy wire rod and wire
WITHDRAWN published on 4.6.2019
Selected format:General technical requirements of corrosion-resistant alloy strips and wires for welding
WITHDRAWN published on 4.6.2019
Selected format:Bite type tube fittings—Pressure bush for butt joints
WITHDRAWN published on 17.6.1983
Selected format:Corrosion-resistant alloy wires for welding
WITHDRAWN published on 4.6.2019
Selected format:Bite type tube fittings—Tipping washer
WITHDRAWN published on 17.6.1983
Selected format:Latest update: 2026-07-24 (Number of items: 2 290 214)
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