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GB - Chinese national standards - Page 7070

Standards GB - Chinese national standards - Page 7070

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

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Publication year
Preview GB/T 223.70-1989 31.3.1989
GB/T 223.70-1989 WITHDRAWN

Methods for chemical analysis of iron, steel and alloy—The o-phenanthroline spectrophotometric method for the determination of iron content

WITHDRAWN published on 31.3.1989

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238.80 USD


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Preview GB/T 223.72-1991 6.9.1991
GB/T 223.72-1991 WITHDRAWN

Methods for chemical analysis of iron, steel and alloy—The alumina chromatographic separation-barium sulfate gravimetric method for the determination of sulphur content

WITHDRAWN published on 6.9.1991

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Preview GB/T 223.73-1991 6.9.1991
GB/T 223.73-1991 WITHDRAWN

Methods for chemical analysis of iron, steel and alloy—The titanium trichloride-potassium dichromate volumetric method for the determination of iron content

WITHDRAWN published on 6.9.1991

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Preview GB/T 223.75-1991 6.9.1981
GB/T 223.75-1991 WITHDRAWN

Methods for chemical analysis of iron, steel and alloy—The methanol distillation-curcumin photometric method for the determination of boron content

WITHDRAWN published on 6.9.1981

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Preview GB/T 223.75-2008 13.5.2008
GB/T 223.75-2008 WITHDRAWN

Iron,steel and alloy - Determination of boron content - Methanol distillation-curcumin photometric method

WITHDRAWN published on 13.5.2008

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in 3 working days
Preview GB/T 223.78-2000 25.10.2000
GB/T 223.78-2000 WITHDRAWN

Methods for chemical analysis of ironsteel and alloy--Curcumin spectrophotometric method for the determination of boron content

WITHDRAWN published on 25.10.2000

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Preview GB/T 223.8-2000 11.4.2000
GB/T 223.8-2000 WITHDRAWN

Methods for chemical analysis of ironsteel and alloy--The sodium fluoride separation--EDTA titration method for the determination of aluminium content

WITHDRAWN published on 11.4.2000

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Preview GB/T 223.82-2007 11.9.2007
GB/T 223.82-2007 WITHDRAWN

Steel and iron—Determination of hydrogen content—Inert gas impulse fusion heat conductivity method

WITHDRAWN published on 11.9.2007

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IN STOCK
Preview GB/T 223.9-2000 11.4.2000
GB/T 223.9-2000 WITHDRAWN

Methods for chemical analysis of iron,steel and alloy The chrom azurol S photometric method for the determination of aluminium content

WITHDRAWN published on 11.4.2000

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Preview GB/T 223.9-2008 13.5.2008
GB/T 223.9-2008 WITHDRAWN

Iron, steel and alloy - Determination of aluminium content - Chrom azurol S photometric method

WITHDRAWN published on 13.5.2008

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