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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-Noise emitted by machinery and equipment-Guidelines for the use of basic standards for the determination of emission sound pressure levels at a work station and at other specified positions
WITHDRAWN published on 16.3.2000
Selected format:Acoustics—Noise emitted by machinery and equipment—Measurement of emission sound pressure levels at a work station and at other specified positions—Engineering method in an essentially free field over a reflecting plane
WITHDRAWN published on 8.3.1999
Selected format:Acoustics—Noise emitted by machinery and equipment—Measurement of emission sound pressure levels at a work station and at other specified positions—Survey method in situ
WITHDRAWN published on 8.3.1999
Selected format:Acoustics--Noise emitted by machinery and equipment-- Determination of emission sound pressure level at a workstation and at other specified position from the sound power level
WITHDRAWN published on 18.3.1998
Selected format:Acoustics—Noise emitted by machinery and equipment—Measurement of emission sound pressure levels at a work station and at other specified positions—Method requiring environmental corrections
WITHDRAWN published on 8.3.1999
Selected format:Methods of test for non-volatile matter of varnishespaints and their vehicles
WITHDRAWN published on 15.9.1979
Selected format:Synthetic filament yarn fabrics
WITHDRAWN published on 18.3.1998
Selected format:Synthetic filament yarn fabrics
WITHDRAWN published on 6.8.2008
Selected format:Wheelchairs—Type classification based on appearance characteristics
WITHDRAWN published on 18.3.1998
Selected format:Prosthetics and orthotics—Classification and description of prosthetic components—Part 1:Classification of prosthetic components
WITHDRAWN published on 18.3.1998
Selected format:Latest update: 2025-11-16 (Number of items: 2 243 995)
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