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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
Radio-frequency connectors - Part 1: Generic specification - General requirements and measuring methods
Standard published on 12.11.2013
Selected format:Radio-frequency connectors - Part 10Sectional specification - SMB series R.F. coaxial connectors
Standard published on 31.12.2012
Selected format:Radio-frequency connectors—Part 101Sectional specification for MMCX series RF coaxial connectors
Standard published on 2.6.2015
Selected format:Radio-frequency connectors—Part 11Sectional specification for RF coaxial connectors with inner diameter of outer conductor 9.5mm (0.374in) with screw coupling with characteristic impedance 50 (type 4.1/9.5)
Standard published on 17.9.2018
Selected format:Radio-frequency connectors—Part 13:Sectional specification for type 1.6/5.6 and 1.8/5.6 RF coaxial connectors
Standard published on 17.9.2018
Selected format:Radio frequency connectors—Part 15: R.F.coaxial connectors with inner diameter of outer conductor 4.13mm(0.163in), characteristic impedance 50 ohms, screw coupling (Type SMA)
Standard published on 15.3.2018
Selected format:Radio-frequency connectors—Part 16Sectional specification for RF coaxial connectors with inner diameter of outer conductor 7 mm (0.276 in) with screw coupling—Characteristics impedance 50 (75 ) (type N)
Standard published on 2.6.2015
Selected format:Radio-frequency connectors—Part 18Sectional specification-Radio frequency coaxial connectors of type SSMA
Standard published on 17.12.2013
Selected format:Radio-frequency connectorsPart 19: Sectional specification-radio frequency coaxial connectors of type SSMB
Standard published on 17.12.2013
Selected format:Radio-frequency connectors - Part 2: Sectional specification - Radio frequency coaxial connectors for type 9.52
Standard published on 29.6.2007
Selected format:Latest update: 2025-12-26 (Number of items: 2 253 153)
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