| http://www.w3.org/ns/prov#value | - Referring to FIG. 16B, the double walled tube 370 is cut to a desired length, e.g. 112-133 mm, at 364 with a heated blade that cuts by melting the fibers and fusing the fibers together to form a fused end, the inner and outer walls being joined in an annular fused joint at 364.
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