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Nippon Steel Corp
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Nippon Steel Corp
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Application filed by Nippon Steel CorpfiledCriticalNippon Steel Corp
Priority to JP10643777ApriorityCriticalpatent/JPS5439680A/en
Publication of JPS5439680ApublicationCriticalpatent/JPS5439680A/en
PURPOSE: To achieve the improvement in flaw detection accuracy for multiple steel kinds by calibrating the distance amplitude calibrator in an ultrasonic inspector according to the attenuation characteristics of the ultrasonic waves of the material to be examined.