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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
Enamelled round winding wires--Part 4:Self-fiuxing polyurethane enamelled round copper wires
WITHDRAWN published on 11.6.1988
Selected format:Enamelled round winding wires--Part 5:Polyesterimide enamelled round copper wires with a temperature index of 180
WITHDRAWN published on 11.6.1988
Selected format:Enamelled round winding wires--Part 6:Polyimide enamelled round copper wires with a temperatureindex of 220
WITHDRAWN published on 11.6.1988
Selected format:Enamelled round winding wires—Part 7:Polyester enamelled round copper wires, class 130
WITHDRAWN published on 7.11.1990
Selected format:Enamelled round winding wires--Part 8:Heat or solvent bonding polyester enamelled round copper wires
WITHDRAWN published on 31.3.1989
Selected format:Enamelledround winding wires--Part 9:Heat or solvent bonding solderable polyurethane enamelled round copper wires
WITHDRAWN published on 31.3.1989
Selected format:Chemical reagent—General method for the determination of density
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent—General method for the determination of density
WITHDRAWN published on 3.11.2006
Selected format:Hardmetal dies for drawing wires and bars—Types and dimensions
WITHDRAWN published on 17.6.1985
Selected format:Carbide dies for drawing—Types and dimensions
WITHDRAWN published on 6.6.2008
Selected format:Latest update: 2026-04-24 (Number of items: 2 274 650)
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