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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
Natural gas—Determination of sulfur compound—Part 4:Determination of total sulfur content by oxidative microcoulometry method
WITHDRAWN published on 9.8.2010
Selected format:Natural gas—Determination of sulfur compound—Part 4:Determination of total sulfur content by oxidative microcoulometry method
WITHDRAWN published on 9.8.2010
Selected format:Natural gas--Determination of sulfur compounds--Part 6: Determination of hydrogen sulfide, mercaptan sulfur and carbonyl sulfide sulfur by potentiometry
WITHDRAWN published on 5.12.2011
Selected format:Natural gas - Determination of sulfur compounds - Part 7: Determination of total sulfur content by Lingener combustion method
WITHDRAWN published on 30.12.2011
Selected format:Natural gas—Determination of sulfur compound—Part 8:Determination of total sulfur content by ultraviolet fluorescence method
WITHDRAWN published on 5.11.2012
Selected format:-
WITHDRAWN published on 1.1.1989
Selected format:Natural gas—Determination of sulfur—Oxidative microcoulometry method
WITHDRAWN published on 8.5.1997
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WITHDRAWN published on 1.1.1989
Selected format:Natural gas—Calculation of calorific values, density, relative density and Wobbe index from composition
WITHDRAWN published on 17.6.1998
Selected format:Natural gas—Calculation of calorific values,density,relative density and Wobbe index
WITHDRAWN published on 5.12.2014
Selected format:Latest update: 2026-01-26 (Number of items: 2 257 479)
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