RECOVERING PIPE OF BRANCH PIPE AND METHOD FOR RECOVERING BRANCH PIPE OF OLD REPAIRING PIPE

摘要

PURPOSE: A recovering pipe of a branch pipe and a method for recovering the branch pipe are provided to recover the branch pipe of an old repairing pipe by coupling the recovering pipe to an inner wall of a liner. CONSTITUTION: A liner(22) is positioned below a branch pipe(23). The liner(22) is perforated such that it has a diameter identical to a diameter of the branch pipe(23). A T-shaped recovering pipe(10) is inserted to a lower portion of the branch pipe(23). A heater is operated to couple a lower melting plate(12) of the T-shaped recovering pipe(10) to an inner wall of the liner(22). An upper end of the T-shaped recovering pipe(10) is expanded so as to allow the T-shaped recovering pipe(10) to make contact with a flange section formed on an upper end of the branch pipe(23).