| 摘要 |
PURPOSE: A connection method of buried triple wall drain pipe for connecting is provided to easily weld the triple wall drain pipes by providing molten synthetic resin to a connecting hole of a connector with welding perforation hole of the triple wall drain pipe. CONSTITUTION: A connection method of buried triple wall drain pipes for connecting(10,11) is connected to a connector(20). The connector has connecting projected portions(23,24), a packing groove(22), and connecting holes(26). The packing groove is formed in the center of the internal side of a connective projection having pipe insertion portion(25). A packing(16) is installed at the packing groove. The connecting holes are formed at the connecting projected portions leaving predetermined intervals. Welding perforated holes(15) coinciding with the connecting holes are formed in the triple wall drain pipe.
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