We need your consent to use the individual data so that you can see information about your interests, among other things. Click "OK" to give your consent.
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
Methods forchemical analysis of ironsteel and alloy--The pulse heating inert gas fusion-coulometric titration method for the determination of oxygen content
WITHDRAWN published on 18.7.1985
Selected format:Methods for chemical analysis of iron, steel and alloy--The volumetric method for the determination of nitrogen content after distillation separation
WITHDRAWN published on 1.1.1985
Selected format:Methods for chemical analysis of iron, steel and alloy The indophenol blue photometric method for the determination of nitrogen content after distillation separation
WITHDRAWN published on 31.3.1989
Selected format:-
WITHDRAWN published on 1.1.1985
Selected format:Methods for chemical analysis iron,steel and alloy The sulphochlorophenol S photometric method for the determination of niobium content
WITHDRAWN published on 26.9.1994
Selected format:Methods for chemical analysis of iron, steel and alloy The volumetric method for determination of manganese content by ammonium nitrate oxidation
WITHDRAWN published on 18.1.1988
Selected format:Methods for chemical analysis of iron, steel and alloy—The anion-exchange separation-sulphochlorophenol S photometric method for the determination of niobium content
WITHDRAWN published on 18.7.1985
Selected format:-
WITHDRAWN published on 1.1.1985
Selected format:Methods for chemical analysis of iron, steel and alloy—Determination of tungsten content
WITHDRAWN published on 26.9.1994
Selected format:Methods for chemical analysis of iron, steel and alloy--The tetraphenylarsonium chloride-thiocyanate-trichloromethane extraction photometric method for the determination of tungsten content
WITHDRAWN published on 1.1.1985
Selected format:Latest update: 2026-01-21 (Number of items: 2 257 297)
© Copyright 2026 NORMSERVIS s.r.o.