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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
Acoustics - Measurements of the longitudinal wave velocity and attenuation coefficient for underwater acoustical materials - Pulse tube method
Standard published on 8.5.2006
Selected format:Fasteners—Electroplate coating
Standard published on 23.5.2023
Selected format:Fasteners—Non-electrolytically applied zinc flake coatings
Standard published on 31.12.2021
Selected format:Fasteners - Hot dip galvanized coatings
Standard published on 25.8.2008
Selected format:Passivation of corrosion-resistant stainless-steel fasteners
Standard published on 15.10.2009
Selected format:Fasteners surface treatment—Part 5Zinc thermal diffusion coatings
Standard published on 29.9.2024
Selected format:Double-pitch precision roller chains, attachments and associated chain sprockets for transmission and conveyors
Standard published on 1.7.2008
Selected format:Metallic coatings on metallic substrates--Electrodepo-sited and chemically deposited coatings--Review of methods available for testing adhesion
Standard published on 29.6.1985
Selected format:Metallic coatings on metallic substrates-Electrodeposited and chemically deposited coatings-Review of methods available for testing adhesion
Standard published on 23.6.2005
Selected format:Metallic coatings on metallic substrates—Electrodeposited and chemically deposited coatings—Review of methods available for testing adhesion
Standard published on 29.6.2024
Selected format:Latest update: 2026-08-14 (Number of items: 2 293 479)
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