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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
Hollow hexagonal drill rods with taperd connection for rock drilling
Standard published on 13.12.2016
Selected format:Thread extension steel bars for rock drilling
Standard published on 25.10.2007
Selected format:Liquid chemicals—Determination of refractive index
Standard published on 12.10.2022
Selected format:Chemical reagent—Potassium bromide
Standard published on 6.8.2023
Selected format:Water-turbine pump
Standard published on 21.5.2021
Selected format:Drying quality of sawn timber
Standard published on 31.12.2012
Selected format:Aerospace reference photovoltaic cells
Standard published on 31.12.2025
Selected format:Measurement method for electrical characteristics of aerospace solar cells
Standard published on 1.11.2017
Selected format:Photovoltaic devices—Part 1: Measurement of photovoltaic current-voltage characteristics
Standard published on 31.12.2025
Selected format:Photovoltaic devices—Part 10: Methods of linear dependence and linearity measurements
Standard published on 31.12.2025
Selected format:Latest update: 2026-08-07 (Number of items: 2 292 304)
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