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Duro-Felguera Sa
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Duro-Felguera Sa
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Priority to ES1982266883UpriorityCriticalpatent/ES266883Y/es
Publication of ES266883UpublicationCriticalpatent/ES266883U/es
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Publication of ES266883YpublicationCriticalpatent/ES266883Y/es
Tubos tresillones perfeccionados, esencialmente caracterizados por la circunstancia de que los extremos de los tubos se encuentran aplastados en ambos extremos en una longitud determinada por el esfuerzo que han de transmitir y que en esa zona aplastada se efectúan uno o dos taladros de diámetro adecuado.