| 摘要 |
<p>A method for producing a tubular insulator comprising providing a tubular insulator (15) including a longitudinal tubular structure. The method further comprises flaring a first international diameter (a) of a longitudinal bore (26) in a first tubular end (20) of the tubular structure into a second internal diameter (b) that is larger than the first internal diameter (a) to produce a tubular insulator defining the first tubular end (20) having a longitudinal bore (22) with the second internal diameter (b). The method further includes flaring the first internal diameter (a) of the longitudinal bore in a second tubular end (25) into a third internal diameter (c) that is larger than the second internal diameter (b).</p> |
