FIELD: pipes.
SUBSTANCE: heated fluid line comprises an inner tube, an outer sheath and a heating element. Heating element is disposed between the inner tube and the outer sheath. Heating element comprises an interior core formed of a first metallic material, and an exterior jacket formed from a second metallic material. In one embodiment, the heating element is wrapped around the inner tube and has a round cross-section.
EFFECT: in another embodiment, the exterior jacket is non-reactive and resistant to water corrosion, and the outer sheath is moisture impermeable.
14 cl, 3 dwg
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