| 摘要 |
<p>The present invention pertains to a heat radiation pipe used in residential floor heating, agricultural house heating, etc., and provides a heat radiation pipe having excellent durability at a low price. The present invention has: an extrusion-molded double-layer pipe (10) having an outer pipe (11), an inner pipe (12) disposed inside the outer pipe so that a space is left between the inner pipe and the outer pipe (11), and support plates (13) that widen in the longitudinal direction and the radial direction, the support plates (13) connecting the outer pipe (11) and the inner pipe (12), supporting the inner pipe (12), and being provided at multiple locations in the circumferential direction; and a pair of end plates (20) for sealing the interior space interposed between the outer pipe (11) and the inner pipe (12) and allowing the end sections of the inner pipe (12) or a pipe (121) connected to the inner pipe (12) to protrude at both ends of the double-layer pipe (10).</p> |
