GB - Chinese national standards - Page 6233

Standards GB - Chinese national standards - Page 6233

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GB/T 9439-1988 WITHDRAWN

Grey iron castings

WITHDRAWN published on 25.6.1988

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GB/T 9440-1988 WITHDRAWN

Malleable iron castings

WITHDRAWN published on 25.6.1988

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GB/T 9441-1988 WITHDRAWN

Metallographic test for spheroidal graphite cast iron

WITHDRAWN published on 25.6.1988

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GB/T 9442-1998 WITHDRAWN

Foundry silica sand

WITHDRAWN published on 30.7.1998

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GB/T 9443-1988 WITHDRAWN

Methods of liquid penetrant testing and classification of indication for steel castings

WITHDRAWN published on 25.6.1988

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GB/T 9443-2007 WITHDRAWN

Penetrant testing forsteel castings

WITHDRAWN published on 23.8.2007

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GB/T 9444-1988 WITHDRAWN

The methods for magnetic particle testingand for specifying quality levels of steel castings

WITHDRAWN published on 25.6.1988

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GB/T 9444-2007 WITHDRAWN

Magnetic particle testing for steel castings

WITHDRAWN published on 23.8.2007

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GB/T 9445-1999 WITHDRAWN

Qualification and artification for nondestructive testing personnel

WITHDRAWN published on 23.11.1999

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GB/T 9445-2005 WITHDRAWN

Non-destructive testing-Qualification and certification of personnel

WITHDRAWN published on 22.9.2005

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