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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
Recommended practice for the operationmaintenance and troubleshooting of electric submersible pump installations
Standard published on 18.5.1998
Selected format:Eletctric submersible pump installations
Standard published on 10.11.2010
Selected format:Recommended practice for the application of electrical submersible cable system
Standard published on 31.12.2013
Selected format:
Manufacture, inspection and application of electric submersible pump cable
Execute Date: september 2026
Standard published on 27.2.2026
Selected format:Recommended practice for electrical submersible pump teardown report
Standard published on 10.11.2010
Selected format:Fabric for the national flag
Standard published on 28.1.2026
Selected format:Specification for thermal insulation for use in contact with austenitic stainless steel
Standard published on 30.6.2008
Selected format:Metallic materials—Leeb hardness test—Part 1:Test method
Standard published on 31.10.2025
Selected format:Metallic materials—Leeb hardness test—Part 2: Verification and calibration of hardness testers
Standard published on 11.7.2022
Selected format:Metallic materials—Leeb hardness test—Part 3: Calibration of reference test blocks
Standard published on 11.7.2022
Selected format:Latest update: 2026-08-28 (Number of items: 2 298 625)
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