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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
Electrical insulating materials—Thermal endurance properties—Part 9: Instructions for calculating thermal endurance characteristics using simplified procedures
Standard published on 13.12.2016
Selected format:Test methods for the determination of bond strength of impregnating agents to an enamelled wire substrate
Standard published on 13.9.1999
Selected format:Cotton—Part 1: Saw ginned upland cotton
Standard published on 8.9.2023
Selected format:Cotton - Part 2: Roller ginned upland cotton
Standard published on 14.11.2012
Selected format:Cotton—Part 3:Natural color upland cotton
Standard published on 26.10.2024
Selected format:Characteristics of rod ceramic insulators for a.c. contact system of electrified railways
Standard published on 30.6.2008
Selected format:Metal-oxide surge arresters without gaps for a.c. systems
Standard published on 14.12.2020
Selected format:Marine electric reciprocating pump
Standard published on 3.2.2008
Selected format:Marine electric two spindle screw pump
Standard published on 3.3.2008
Selected format:Test method for strength and tightness of marine boiler and pressure vessel
Standard published on 9.3.2009
Selected format:Latest update: 2026-03-16 (Number of items: 2 266 785)
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