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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 3:Polyvinyl acetal enamelled round copper wire,class 120
Standard published on 23.4.2008
Selected format:Enamelled round winding wire - Part 4:Solderable polyurethane enamelled round copper wire,class 130
Standard published on 23.4.2008
Selected format:Enamelled round winding wire—Part 5:Polyesterimide enamelled round copper wire,class 180
Standard published on 5.10.2025
Selected format:Enamelled round winding wire - Part 6:Polyimide enamelled round copper wire, class 220
Standard published on 23.4.2008
Selected format:Enamelled round winding wire - Part 7:Polyester enamelled round copper wire,class 130L
Standard published on 23.4.2008
Selected format:Enamelled round winding wire - Part 9:Solderable polyurethane enamelled round copper wire overcoated with polyamide,class 130
Standard published on 23.4.2008
Selected format:Chemical reagent—General method for the determination of density
Standard published on 20.8.2021
Selected format:Drawing dies—Carbide alloy drawing dies—Structural types and dimensions
Standard published on 20.8.2021
Selected format:Thermoplastics piping systems for the conveyance of fluids—Determination of the resistance to internal pressure
Standard published on 15.3.2018
Selected format:Specification for radio disturbance and immunity measuring apparatus and methods—Part 1-1: Radio disturbance and immunity measuring apparatus—Measuring apparatus
Standard published on 31.12.2021
Selected format:Latest update: 2026-06-23 (Number of items: 2 284 357)
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