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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
Polyvinyl chloride insulated cables of rated voltages up to and including 450/750V - Part 2Test methods
Standard published on 30.6.2008
Selected format:Polyvinyl chloride insulated cables of rated voltages up to and including 450/750V - Part 3Non-sheathed cables for fixed wiring
Standard published on 30.6.2008
Selected format:Polyvinyl chloride insulated cables of rated voltages up to and including 450/750V - Part 4Sheathed cables for fixed wiring
Standard published on 30.6.2008
Selected format:Polyvinyl chloride insulated cables of rated voltages up to and including 450/750V - Part 5Flexible cables (cords)
Standard published on 30.6.2008
Selected format:Polyvinyl chloride insulated cables of rated voltages up to and including 450/750V Part 6: Lift cables and cables for flexible connections
Standard published on 30.4.2006
Selected format:Polyvinyl chloride insulated cables of rated voltages up to and including 450/750V - Part 7Flexible cables screened and unscreened with two or more conductors
Standard published on 30.6.2008
Selected format:General code for construction and acceptance of mechanical equipment installation engineering
Standard published on 19.3.2009
Selected format:Code for construction and acceptance of 110kV750kV overhead transmission line
Standard published on 9.10.2014
Selected format:Code for construction and acceptance of industrial metallic piping
Standard published on 18.8.2010
Selected format:Code for construction and acceptance of field equipment, industrial pipe welding engineering
Standard published on 18.2.2011
Selected format:Latest update: 2026-07-09 (Number of items: 2 286 317)
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