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GB - Chinese national standards - Page 8424

Standards GB - Chinese national standards - Page 8424

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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Preview GB/T 6446-1986 28.5.1986

GB/T 6446-1986 WITHDRAWN

Frequency weighting for the measurement of aircraft noise (D—weighting)

WITHDRAWN published on 28.5.1986

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Preview GB/T 6447-1986 14.6.1986

GB/T 6447-1986 WITHDRAWN

Rules for abstracts and abstracting

WITHDRAWN published on 14.6.1986

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Preview GB/T 6448-1986 31.5.1986

GB/T 6448-1986 WITHDRAWN

Methods of measurement for artificial reverberation equipment

WITHDRAWN published on 31.5.1986

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Preview GB/T 6449-1986 31.5.1986

GB/T 6449-1986 WITHDRAWN

Methods of measurement on time delay and frequency shift equipment

WITHDRAWN published on 31.5.1986

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Preview GB 645-1977 1.1.1977

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WITHDRAWN published on 1.1.1977

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Preview GB/T 645-1994 23.3.1994

GB/T 645-1994 WITHDRAWN

Chemical reagent—Potassium chlorate

WITHDRAWN published on 23.3.1994

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Preview GB 6450-1986 29.5.1986

GB 6450-1986 WITHDRAWN

Dry-type power transformers

WITHDRAWN published on 29.5.1986

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Preview GB/T 6451-1999 10.10.1999

GB/T 6451-1999 WITHDRAWN

Specification and technical requirements for three-phase oil-immersed power transformers

WITHDRAWN published on 10.10.1999

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Preview GB/T 6451-2008 22.1.2008

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Specification and technical requirements for oil-immersed power transformers

WITHDRAWN published on 22.1.2008

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Preview GB/T 6451-2015 11.9.2015

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Specification and technical requirements for oil-immersd power transformers

WITHDRAWN published on 11.9.2015

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