ES420099A3 - Improvements in the process of manufacturing rigid tubes helicoidally engatillados. (Machine-translation by Google Translate, not legally binding)
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Improvements in the process of manufacturing rigid tubes helicoidally engatillados. (Machine-translation by Google Translate, not legally binding)
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Ayroducto S A
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Ayroducto S A
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"IMPROVEMENTS IN THE PROCESS OF MANUFACTURING RIGID TUBES HELICOIDALLY ENGATILLADOS", of the type obtained from a band or strip of malleable metal material, preferably an aluminum alloy and characterized by being subjected to a progressive winding in the helicoidal direction with regular modulus in all the extension where, their edges, contiguous or permanently contiguous in the order of winding, are treated until forming a generatrixing in the aforementioned helical order around the development of a cylindrical tubular element of completely smooth core. (Machine-translation by Google Translate, not legally binding)
ES420099A1973-10-301973-10-30Improvements in the process of manufacturing rigid tubes helicoidally engatillados. (Machine-translation by Google Translate, not legally binding)
ExpiredES420099A3
(en)