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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
Plugs,socket-outlets and couplers for industriial purposesPart 2: Dimensional compatiblity and interchangeability requirements for pin and contact-tube accessories
Standard published on 24.6.2014
Selected format:
Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes—Part 2: Dimensional compatibility requirements for pin and contact-tube accessories
Execute Date: may 2026
Standard published on 5.10.2025
Selected format:Plugs, socket-outlets and couplers for industrial purposesPart 4: Switched socket-outlets and connectors with or without interlock
Standard published on 6.5.2014
Selected format:
Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes—Part 4: Switched socket-outlets with or without interlock
Execute Date: may 2026
Standard published on 5.10.2025
Selected format:Plugs, socket-outlets and couplers for industrial purposes—Part 5: Dimensional compatibility and interchangeability requirements for plugs, socket-outlets, ship connectors and ship inlets for low-voltage shore connection systems (LVSC)
Standard published on 14.12.2020
Selected format:Plugs,socket-outlets and couplers for industrial purposes—Part 6: Direct current(DC) plugs,socket-outlets and connectors for ship and shore power supply system
Standard published on 28.2.2025
Selected format:Technical specification of agricultural tyres
Standard published on 1.11.2017
Selected format:General specification of central control equipment and system for electrical parts in power stations and substations
Standard published on 24.9.2008
Selected format:Level meter utilizing ionizing radiation
Standard published on 2.7.2008
Selected format:Determination of phosphorus in uranium dioxide powder and pellets—Molybdenum blue spectrophotometric method
Standard published on 29.8.2025
Selected format:Latest update: 2025-12-29 (Number of items: 2 253 390)
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