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MALUMBRES OTEIZA JES S
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MALUMBRES OTEIZA JES S
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Publication of ES46727YpublicationCriticalpatent/ES46727Y/es
"NUEVA ESCALERA METÁLICA" caracterizada por que está constituida esencialmente por dos largueros de chapa metálica, cada uno de los cuales está dotado de seis dobleces longitudinales en ángulo recto, que le dan solidez y le proporcionan una sección transversal aproximadamente rectangular, con una ranura provista de dos rebordes a todo lo largo de la cara interior del larguero para la inserción de los peldaños correspondientes y una acanaladura exterior, también longitudinal, que refuerza el larguero.
Perfectionnements aux procédés d'amincissement de tiges, fils, bandee et pièces semblables métalliques par étirage, laminage et opérations analogues