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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
Machine reamers with parallel shanks
WITHDRAWN published on 6.12.1973
Selected format:Machine chucking reamers with parallel shanks or Morse taper shanks
WITHDRAWN published on 10.2.2004
Selected format:Guide to the design of radio-frequency coaxial cables
WITHDRAWN published on 1.1.1989
Selected format:Radio-frequency cables—Part 0:Guide to the design of detail specifications Section 1—Coaxial cables
WITHDRAWN published on 13.10.1997
Selected format:General requirements and tests for single-unit coaxial cables for use in cabled distribution systems
WITHDRAWN published on 31.3.1989
Selected format:Performance of the fourth order digital multiplex equipment operating at 139 264kbit/s and using positive justification
WITHDRAWN published on 1.1.1989
Selected format:Test methods of the fourth order digital multiplex equipment operating at 139 264kbit/s and using positive justification
WITHDRAWN published on 1.1.1989
Selected format:High frequency rural telecommunication cables with polyolefin insulation and laminated aluminium polyolefin sheath--General
WITHDRAWN published on 31.3.1989
Selected format:High frequency rural telecommunication cables with polyolefin insulation and laminated aluminium polyolefin sheath--Unfilled cables with copper conductors
WITHDRAWN published on 31.3.1989
Selected format:High frequency rural telecommunication cables with polyolefin insulation and laminated aluminium polyolefin sheath--Unfilled cables with aluminium conductors
WITHDRAWN published on 31.3.1989
Selected format:Latest update: 2026-01-25 (Number of items: 2 257 482)
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