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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
Glass-fiber wound winding wires - Part 4: Glass-fiber wound resin or varnish impregnated, bare or enamelled rectangular copper wire, temperature index 180
Standard published on 30.6.2008
Selected format:Glass-fiber wound winding wires - Part 5: Glass-fiber wound resin or varnish impregnated, bare or enamelled rectangular copper wire, temperature index 200
Standard published on 30.6.2008
Selected format:Glass-fiber wound winding wires - Part 6: Glass-fiber and film wound rectangular copper wire
Standard published on 30.6.2008
Selected format:Paper covered wires - Part 1: General requirements
Standard published on 24.3.2008
Selected format:Paper covered wires - Part 2: Paper covered round wire
Standard published on 24.3.2008
Selected format:Paper covered wires - Part 3: Paper covered rectangular copper wire
Standard published on 24.3.2008
Selected format:Paper covered wires - Part 4: Paper covered combined conductors
Standard published on 24.3.2008
Selected format:Paper covered wires - Part 5: Paper covered stranded conductors
Standard published on 24.3.2008
Selected format:Gas-insulated metal-enclosed switchgear for rated voltages of 72.5 kV and above
Standard published on 19.11.2020
Selected format:Direct acting indicating analogue electrical measuring instruments and their accessories—Part 1:Definitions and general requirements common to all parts
Standard published on 7.9.2017
Selected format:Latest update: 2026-05-14 (Number of items: 2 277 490)
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