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Agra Plast A S
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Agra Plast A S
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Priority to ES1968152070UpriorityCriticalpatent/ES152070Y/es
Publication of ES152070UpublicationCriticalpatent/ES152070U/es
Application grantedgrantedCritical
Publication of ES152070YpublicationCriticalpatent/ES152070Y/es
Shaping Of Tube Ends By Bending Or Straightening
(AREA)
Abstract
Un método para utilizar en la fabricación de tubos de desagüe de material plástico, particularmente polietileno, por cuyo método el tubo se provee de orificios, caracterizado por el hecho de que se forman orificios por atravesado de las paredes del citado tubo mediante espigas que se calientan a una temperatura por encima de la temperatura de ablandamiento del material del tubo, de forma que se constituyan collares sobresalientes en torno de los citados orificios.
ES1968152070U1968-06-221968-06-22Tubo de desague perfeccionado.
ExpiredES152070Y
(es)