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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
Equipments and components used in cabled distribution systems primarily intended for television and sound signals. Part 12: Generic specifications for system outlets
Standard published on 9.9.1996
Selected format:Equipments and components used in cabled distribution systems primarily intended for television and sound signals--Part 4:Generic specifications for channel processor
Standard published on 9.9.1996
Selected format:Equipments and components used in cabled distribution systems primarily intended for television and sound signals. Part 8: Generic specifications for trunk amplifiers
Standard published on 9.9.1996
Selected format:Equipments and components used in cabled distribution systems primarily intended for television and sound signals--Part 9:Generic specifications of equipments for power supply
Standard published on 9.9.1996
Selected format:Machine chucking reamers with cylindrical shanks and Morse taper shanks
Standard published on 28.2.2017
Selected format:Test methods for the properties of piezoelectric ceramics--Material with the low mechanical quality factor
Standard published on 31.3.1989
Selected format:Guide for choosing modular dimensions for waveguide components
Standard published on 31.3.1989
Selected format:Radio frequency cablesPart 0: Guide to the design of detail specificationsSection 1Coaxial cables
Standard published on 17.12.2013
Selected format:Performance and test methods of the fourth order digital multiplex equimpent operatingat 139264 kbit/s and using positive justification
Standard published on 6.4.1995
Selected format:Low-frequency telecommunication cables and wires with PVC insulation and PVC sheath--Part 1:General test and measuring methods
Standard published on 2.8.1999
Selected format:Latest update: 2025-12-26 (Number of items: 2 253 153)
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