Standards GB - Chinese national standards - Page 5266

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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GB/T 8651-2015

Metal plates—Flaw detection method by the ultrasonic plate wave

Standard published on 11.9.2015

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GB/T 8654.1-2007

Manganese metal, ferromanganese - silicon, ferromanganese and nitrogen - bearing ferromanganese - Determination of iron content - The ortho - phenanthrdine spectrophotometric method and the titanium trichloride - potassium dichromate titrimetric method

Standard published on 11.9.2007

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GB/T 8654.6-1988

Methods for chemical analysis of manganese metal--The diamine hydrochloride-iodo-metric method for the determination of selenium content

Standard published on 5.2.1988

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