| 摘要 |
<p>PROBLEM TO BE SOLVED: To correct the end of an old synthetic resin pipe to connect the old pipe having a cross sectional shape deformed in use to a new pipe. SOLUTION: This pipe end correction method for synthetic resin pipe connects a synthetic resin pipe having a cross sectional shape deformed in an elliptic form. An inner core 2 having an outer diameter generally equal to the inner diameter thereof before deformation is fitted into the pipe end 1a of the synthetic resin pipe 1.</p> |
