the helical winding is completed due to the securement only after the helical winding induced and residual stress is reduced in the line 10 as alluded to above reduction in stresses in the line 10 related to the securement and or the construction of the cover 12 significantly improve the performance of the line 10 in subsequent operations in an alternate embodiment and referring to fig2 and 2a the line 10 is secured to the cover 12 without the use of a depression 14 but rather simply directly at the outside dimension 16 of the cover 12 without the benefit of the depression 14 a metal sheet 20 is disposed between the line 10 and the outside dimension 16 of the cover 12 at least one and as illustrated two heat based fusions is are created at each longitudinal side of the line 10 in one embodiment the fusion is created by a laser weld each weld is positioned as illustrated and extends from the cover 12 to the line 10 and incorporates the metal sheet 20 in the joint s 18 in yet another alternate embodiment and referring to fig3 and 3a the line 10 is again placed at the outside dimension of the cover 12 without benefit of a depression 14 in this embodiment similar to the embodiment of fig2 a metal sheet 20 is employed by comparing fig2 a and 3a one will appreciate a distinct difference in the heat based fusion joints employed in the fig3 embodiment joints 18 are placed on each longitudinal side at least one side also being contemplated of the line 10 as in the foregoing embodiments but those joints 18 do not.