ELECTROSEAMED STEEL PIPE AND PRODUCTION METHOD OF THE SAME

PROBLEM TO BE SOLVED: To provide an electroseamed steel pipe and a production method of the same capable of avoiding unevenness of a thickness in the vicinity of an edge of a steel plate during roll molding using a fin pass roll and having excellent inner diameter roundness.SOLUTION: By binding an e...

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Hauptverfasser:	IGUCHI KEINOSUKE, KARUBE YOSHIFUMI
Format:	Patent
Sprache:	eng
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an electroseamed steel pipe and a production method of the same capable of avoiding unevenness of a thickness in the vicinity of an edge of a steel plate during roll molding using a fin pass roll and having excellent inner diameter roundness.SOLUTION: By binding an edge of a steel plate by a fin of a fin pass roll and reducing a flange interval of the fin pass roll and adding contraction to a plate width direction of the steel plate, the electroseamed steel pipe is produced. Based on formula 1, amount of contraction is decided.