PURPOSE:To form a nonporous, uniform, thick ceramic lining on the inside of a pipe by filling a reactive agent causing a self-exothermic reaction into the pipe and by causing the reaction under vibration. CONSTITUTION:A reactive agent 2 causing a self-exothermic reaction is filled into a pipe 1 and a vibrator 3 is connected to the pipe 1. The reactive agent 1 is fired form the top with a gas burner or the like and allowed to react successively under vibration applied by the vibrator 3 to melt a metal and ceramics as the constituents of the agent 2 by the heat of the reaction. Since the entire pipe 1 is vibrated, the molten ceramics 5 and the molten metal 6 are stirred and bubbles 5 float up rapidly and escape. No bubbles are left in a film 4 formed on the inside of the pipe 1 to make the film 4 nonporous and a high quality thick ceramic lining of a prescribed thickness can be formed. The reactive agent 2 may be composed of Al and iron oxide.
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