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Hitachi Ltd
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Hitachi Ltd
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Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP3455177ApriorityCriticalpatent/JPS53121294A/en
Publication of JPS53121294ApublicationCriticalpatent/JPS53121294A/en
PURPOSE:To ensure fixation through removal of distortion factor by pressing pipes uniformly on the inner wall in fixing large diameter pipes made of a thin material to machine.