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Standards GB - Chinese national standards - Page 7931
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 4974-1989
WITHDRAWN
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Compressors, rock drilling machines and pneumatic tools—Preferred pressures
WITHDRAWN published on 4.3.1985
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GB/T 4974-2005
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Compressors,rock drilling machines and pneumatic tools—Preferred pressures
WITHDRAWN published on 11.7.2005
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GB 4975-1985
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Displacement compressors--Vocabulary
WITHDRAWN published on 1.1.1985
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GB/T 4975-1995
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Displacement compressors vocabulary—General
WITHDRAWN published on 12.6.1995
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GB/T 4976-1985
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Compressors—Classification
WITHDRAWN published on 4.3.1985
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GB 4977-1985
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Specification for D-type Shore hardness tester
WITHDRAWN published on 1.1.1985
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GB 4978-1985
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Standard blocks of Shore hardness
WITHDRAWN published on 1.1.1985
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GB 4979-1985
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Abrasive sheets
WITHDRAWN published on 1.1.1985
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GB/T 498-1987
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Petroleum products and lubricants—Method of classification—Definition of classes
WITHDRAWN published on 3.4.1987
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GB/T 4980-1985
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Determination of sound power level for noise emitted by displacement compressors--Engineering method
WITHDRAWN published on 5.3.1985
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