ES243213A3 - Procedure for the manufacture of metal pipe of surface overdrawn (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the manufacture of metal pipe of surface overdrawn (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Aismalibar SA
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Aismalibar SA
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Priority to ES0243213ApriorityCriticalpatent/ES243213A3/en
Publication of ES243213A3publicationCriticalpatent/ES243213A3/en
Process for the manufacture of corrugated metal tube, consisting essentially of strip or strip of a suitable metal, of appropriate dimensions, preferably supplied continuously from the corresponding feeder winding, whose strip, appropriately guided, is inserted into a trunco-conical nozzle in which the conversion of the flat part into another tubular takes place, with its juxtaposed edges which are joined by welding or double overlap, the resulting smooth tube passing to a rotating row, provided with a plurality of rulinas mounted on a support of adjustable position, which due to the pressure exerted on the metallic periphery, originate in this a helicoidal thread of longitudinal wavy section. (Machine-translation by Google Translate, not legally binding)
ES0243213A1958-07-101958-07-10Procedure for the manufacture of metal pipe of surface overdrawn (Machine-translation by Google Translate, not legally binding)
ExpiredES243213A3
(en)