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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 wire - Part 15:Solderable polyurethane enamelled round copper wire,class 130,with a bonding layer
Standard published on 23.4.2008
Selected format:Enamelled round winding wire - Part 16: Solderable polyurethane enamelled round copper wire,class 155,with a bonding layer
Standard published on 23.4.2008
Selected format:Enamelled round winding wire—Part 17:Solderable polyesterimide enamelled round copper wire,class 180,with a bonding layer
Standard published on 5.10.2025
Selected format:Enamelled round winding wire - Part 18: Polyesterimide enamelled round copper wire,class 180,with a bonding layer
Standard published on 23.4.2008
Selected format:Enamelled round winding wire - Part 19: Polyester or polyesterimide overcoated with polyamide-imide enamelled round copper wire,class 200,with a bonding layer
Standard published on 23.4.2008
Selected format:Enamelled round winding wire - Part 2: Polyester enamelled round copper wire,class 155
Standard published on 23.4.2008
Selected format:Enamelled round winding wire - Part 20: Polyester or polyesterimide overcoated with polyamide-imide enamelled round copper wire,class 200
Standard published on 23.4.2008
Selected format:Enamelled round winding wire - Part 21: Polyester-amide-imide enamelled round copper wire,class 200
Standard published on 23.4.2008
Selected format:Enamelled round winding wire—Part 22:Aromatic polyimide enamelled round copper wire,class 240
Standard published on 5.10.2025
Selected format:Enamelled round winding wire—Part 23:Solderable polyurethane enamelled round copper wire,class 180
Standard published on 5.10.2025
Selected format:Latest update: 2026-06-24 (Number of items: 2 284 377)
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