| 摘要 |
Tube for conveying fluids comprising a plurality of concentric layers ( 2 ), an inner layer ( 3 ) constituting a conduit ( 3 a) for a fluid to be conveyed, and at least an outer layer ( 5 ) for protection and reinforcement mounted externally to the inner layer ( 3 ), in which the inner layer ( 3 ) is pigmented and mainly made of a fluoridated polymer chosen between MFA and PFA. The tube ( 1 ) further comprises at least an adhesive ( 6 ) interposed between the outer layer ( 5 ) and the inner layer ( 3 ). The present invention also relates to a method for the production of said tube ( 1 ), comprising the following steps: subjecting an outer surface ( 4 ) of the inner layer ( 3 ) to a cementing process, subsequently applying an adhesive ( 6 ) to the outer surface ( 4 ), and coating the outer surface ( 4 ) with at least an outer layer ( 5 ). The cementing process takes place by at least partial defluorisation of the outer surface ( 4 ) of the inner layer ( 3 ).
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