METODO DI FABBRICAZIONE DI CONDOTTE TERMOISOLATE A TUBI
Method for manufacturing, and heat-insulated pipes comprising coaxial tubes sliding relative to each other with controlled friction: (a) applying a film ( 3 ) of non-adhesive and lubricating material onto the inner surface of a first outer casing tube ( 2 ) and/or onto the outer surface of a second...
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Sprache: | ita |
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