PURPOSE: To shorten the time required for curing and hardening of the lining layer by lining the soft and elastic tube on the lining layer inside the pipe by utilizing the pressurized fluid, and heating and pressing of the lining layer by passing the heated fluid.

CONSTITUTION: The lining layer 1 is formed by applying reactive thermosetting resin type lining material inside the pipe and the open end of the tube 2 is connected to the open end of the pipe a and the tube 2b is expanded and contacted to the inside face of the pipe a by supplying the heated fluid from the inlet 4b and after lining is finished, the lining layer 1 is heated and made to cure and harden by using steam as the pressurized fluid.