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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
Plastics—Determination of resistance to environmental stress cracking (ESC)—Part 1: General guidance
Standard published on 27.11.2023
Selected format:Plastics—Determination of resistance to environmental stress cracking (ESC)—Part 2: Constant tensile load method
Standard published on 27.11.2023
Selected format:Plastics—Determination of resistance to environmental stress cracking (ESC)—Part 3: Bent strip method
Standard published on 27.11.2023
Selected format:Plastics—Determination of resistance to environmental stress cracking (ESC)—Part 4: Ball or pin impression method
Standard published on 27.11.2023
Selected format:Plastics—Determination of resistance to environmental stress cracking (ESC)—Part 5: Constant tensile deformation method
Standard published on 27.11.2023
Selected format:Plastics—Determination of resistance to environmental stress cracking (ESC)—Part 6: Slow strain rate method
Standard published on 27.11.2023
Selected format:Rough-terrain trucks—Operator training—Content and methods
Standard published on 27.11.2023
Selected format:Gas turbine combined cycle power plants—Thermal performance tests
Standard published on 27.11.2023
Selected format:Foundry machinery—Investment casting and lost foam casting equipment—Safety technical specifications
Standard published on 27.11.2023
Selected format:Non-destructive testing of welds—Ultrasonic testing—Use of automated phased array technology for thin-walled steel components
Standard published on 27.11.2023
Selected format:Latest update: 2026-09-11 (Number of items: 2 300 165)
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