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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
Titanium alloy tubing and casing
Standard published on 5.10.2025
Selected format:Petroleum and natural gas industries—Titanium alloy induction bends
Standard published on 5.10.2025
Selected format:Image produced by 16mm motion-picture camera aperture--Position and dimensions
Standard published on 14.8.1984
Selected format:(U-Th)/He isotope determination and age calculation method of apatite and zircon
Standard published on 5.10.2025
Selected format:Determination of the dropping point of grease—Automatic method
Standard published on 5.10.2025
Selected format:Petroleum products and other liquids—Determination of total acidity in ethanol—Potentiometric titration method
Standard published on 5.10.2025
Selected format:Technical specification for recovery of venting gas for transmission pipelines
Standard published on 5.10.2025
Selected format:Failure analysis method for oil and gas transportation pipeline girth welds
Standard published on 5.10.2025
Selected format:Technical specification for ecological restoration of coal gangue piles
Standard published on 5.10.2025
Selected format:Design specification for produced water treatment of coalbed methane well
Standard published on 5.10.2025
Selected format:Latest update: 2026-11-10 (Number of items: 2 209 227)
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