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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
Basic specifications for electroheat installationsPart 47: Vacuum heat treatment and brazing furnace
Standard published on 3.9.2014
Selected format:Basic specifications for electroheat installationsPart 48: Bogie hearth resistance furnaces
Standard published on 3.9.2014
Selected format:Basic specifications for electroheat installationsPart 49: Natural convection pit resistance furnaces
Standard published on 3.9.2014
Selected format:Basic specifications for electroheat installations--high frequency dielectric heating installations
Standard published on 28.12.1993
Selected format:Basic specifications for electroheating and electromagnetic processing installations—Part 6: Industrial microwave heating installations
Standard published on 28.12.2023
Selected format:Basic specifications for electroheat installations—Part 8: Electroslag remelting furnaces
Standard published on 24.2.2016
Selected format:Mechanical vibration of certain machines with shaft heights 56 mm and higher—Measurement, evaluation and limits of vibration severity
Standard published on 31.3.2020
Selected format:Measurement of airborne noise emitted by rotating electrical machines and the noise limits Part 1: Method for the measurement of airborne noise emitted by rotating electrical machines
Standard published on 30.4.2006
Selected format:Measurement of airborne noise emitted by rotating electrical machines and the noise limits - Part 3:Noise limits
Standard published on 19.6.2008
Selected format:
Measurement of airborne noise emitted by rotating electrical machines and the noise limits—Part 3Noise limits
Execute Date: march 2025
Standard published on 23.8.2024
Selected format:Latest update: 2024-12-23 (Number of items: 2 217 157)
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