| 摘要 |
PURPOSE: A flange type connecting method of water pipe is provided to prevent flange separation under water and soil pressures. CONSTITUTION: A flange type connecting method of water pipe(10,11) comprises the following steps: molding a water pipe by extruding a synthetic resin; and molding flanges(20,30). The flange has connecting projected portions and flange protrusions(23,33). The water pipe is inserted into a joint groove and is welded with connecting projection by using molten synthetic resin. The flanges are connected by fixing bolts(26) and nuts(36). The molten member is provided to inside fusion holes of the flange projections and is filled in fusion spaces(24) of the flange projections. |
