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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
Hexagon flange head self-drilling tapping screws
WITHDRAWN published on 1.1.1995
Selected format:Hexagon washer head drilling screws with tapping screw thread
WITHDRAWN published on 5.12.2002
Selected format:Preferred matching values for the interconnection of equipment in audio-visual, video and television systems
WITHDRAWN published on 22.12.1995
Selected format:General specification for compact disc players
WITHDRAWN published on 22.12.1995
Selected format:Generic specification of ion beam etching system
WITHDRAWN published on 22.12.1995
Selected format:Generic specification for ion implantation equipment
WITHDRAWN published on 22.12.1995
Selected format:Basic parameter requirements and methods of measurement on receivers for CATV
WITHDRAWN published on 22.12.1995
Selected format:Video cameras(PAL/SECAM/NTSC)—Methods of measurement—Part 1:Non-broadcast single-sensor cameras
WITHDRAWN published on 22.12.1995
Selected format:Radio frequency and coaxial cable assemblies—Part 2-1:Sectional specification for flexible coaxial cable assemblies
WITHDRAWN published on 22.12.1995
Selected format:Radio frequency and coaxial cable assemblies—Part 4:Sectional specification for semi-rigid coaxial cable assemblies
WITHDRAWN published on 22.12.1995
Selected format:Latest update: 2026-04-30 (Number of items: 2 275 280)
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