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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
STZ3 type connector for electronic measurement instrument
WITHDRAWN published on 17.6.1988
Selected format:Methods of measurement for main characteristics of loudspeakers
WITHDRAWN published on 20.12.1996
Selected format:General specification for electrodynamic loudspeaker of direct radiator type
WITHDRAWN published on 20.12.1996
Selected format:Specifications for spring washers—Single coil spring lock washers
WITHDRAWN published on 5.2.1987
Selected format:Specifications for spring washers—Curved and wave spring washers
WITHDRAWN published on 5.2.1987
Selected format:Dimensions of director radiator loudspeaker
WITHDRAWN published on 17.6.1988
Selected format:Methods of measurement for microphones
WITHDRAWN published on 17.6.1988
Selected format:Minimum performance requirements on high fidelity microphones
WITHDRAWN published on 17.6.1988
Selected format:Specifications for colour TV modulation equipment (1 TV+1 sound program) used in long-haul terres-trial analog radio-relay systems
WITHDRAWN published on 23.6.1988
Selected format:Specifications for colour TV demodulation equipment (1 TV+1 sound program) used in long-haul terres-trial analog radio-relay systems
WITHDRAWN published on 23.6.1988
Selected format:Latest update: 2024-09-05 (Number of items: 2 346 132)
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