| 摘要 |
A connecting method for a joint of a pre-insulated pipe in heat piping is provided to shorten connecting time of the joint of the pre-insulated pipe drastically by cutting both ends of a heat shrinking casing sheet in an oblique line and folding and shrinking the both ends with heat or electricity. A connecting method for a joint of a pre-insulated pipe(1) in heat piping comprises the steps of: cutting a heat shrinking casing sheet(2) to a length corresponding to a circumference of a joint; cutting both ends of the cut heat shrinking casing sheet obliquely; wrapping the joint of the pre-insulated pipe with the heat shrinking casing sheet, and folding the both ends cut obliquely; shrinking and binding a folded part(4) airtightly; and increasing binding force by winding a heat resistance band around the folded heat shrinking casing sheet.
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