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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
Petroleum and natural gas industries—Design and operation of subsea production system—Part 4:Subsea wellhead and tree equipment
WITHDRAWN published on 21.2.2008
Selected format:Petroleum and natural gas industries—Design and operation of subsea production systems—Part 5:Subsea umbilicals
WITHDRAWN published on 2.9.2010
Selected format:Petroleum and natural gas industries—Design and operation of subsea production systems—Part 6:Subsea production control systems
WITHDRAWN published on 16.3.2009
Selected format:Railway applications—Electric equipment for rolling stock—Part 1:General service conditions and general rules
WITHDRAWN published on 22.1.2008
Selected format:Railway applications—Electric equipment for rolling stock—Part 2:Electrotechnical components—General rules
WITHDRAWN published on 22.1.2008
Selected format:Railway applications—Electric equipment for rolling stock—Part 3:Electrotechnical components—Rules for d.c. circuit-breakers
WITHDRAWN published on 22.1.2008
Selected format:Railway applications—Electric equipment for rolling stock—Part4:Electrotechnical components—Rules for AC circuit-breakers
WITHDRAWN published on 22.1.2008
Selected format:Railway applications—Electric equipment for rolling stock—Part 5:Electrotechnical components—Rules for HV rules
WITHDRAWN published on 22.1.2008
Selected format:Railway applications—Rolling stock—Protective provisions against electrical hazards
WITHDRAWN published on 22.1.2008
Selected format:Power transformers,power supply units,reactors and similar products—EMC requirements
WITHDRAWN published on 22.1.2008
Selected format:Latest update: 2026-01-11 (Number of items: 2 254 176)
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