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Standards GB - Chinese national standards - Page 8308
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 5650-1985
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Flared type tube fittings—Inverted flare bolts
WITHDRAWN published on 25.11.1985
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GB/T 5651-1985
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Flared type tube fittings—Seat insert
WITHDRAWN published on 25.11.1985
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GB/T 5652-1985
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Flared type tube fittings—Back-up washer
WITHDRAWN published on 25.11.1985
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GB/T 5653-1985
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Specification for flared type tube fittings
WITHDRAWN published on 25.11.1985
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GB/T 5654-1985
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Measurement of relative permittivity, dielectric dissipation factor at power frequency and volume resistivity of insulating liquids
WITHDRAWN published on 25.11.1985
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GB/T 5655-1985
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Common terms of urban public transport
WITHDRAWN published on 22.11.1985
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GB 5656-1985
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Technical specifications for single-stage single-suction chemical centrifugal pumps
WITHDRAWN published on 1.1.1985
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GB/T 5656-1994
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Technical specifications for centrifugal pumps—Class II
WITHDRAWN published on 29.8.1994
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GB 5657-1985
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Technical specifications for single-stage single-suction centrifugal water pumps
WITHDRAWN published on 1.1.1985
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GB/T 5657-1995
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Technical specifications for centrifugal pumps—Class
WITHDRAWN published on 14.7.1995
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