ES218992A1 - Improvements in the manufacture of waterproof concrete tubes (Machine-translation by Google Translate, not legally binding)
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Improvements in the manufacture of waterproof concrete tubes (Machine-translation by Google Translate, not legally binding)
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Manufacturing Of Tubular Articles Or Embedded Moulded Articles
(AREA)
Moulds, Cores, Or Mandrels
(AREA)
Abstract
Improvements in the manufacture of waterproof concrete pipes that are characterized by having a tubular piece made of plastic material on the central core of the mold that presents its smooth internal face and the external one provided with a plurality of protruding appendages, the first being destined to constitute the inner surface of the tube for which and once Located the central core with the tubular piece superimposed inside the outer mold, the latter is filled with concrete cement or the like. (Machine-translation by Google Translate, not legally binding)
ES218992A1954-12-141954-12-14Improvements in the manufacture of waterproof concrete tubes (Machine-translation by Google Translate, not legally binding)
ExpiredES218992A1
(en)
New procedure with its corresponding mechanical device for the manufacture of fibrocement pipes. (Machine-translation by Google Translate, not legally binding)
Ceramic pieces for the construction of tubes. With the registration priority of 10-5-54 and as a duplication of model 41919 of the aforementioned date (Machine-translation by Google Translate, not legally binding)
Procedure for the manufacture of fibrocement tubes with monolithic inside coating of plastic material. (Machine-translation by Google Translate, not legally binding)