A method of securing a pipe in a tube plate opening by pressurizing the inside of the pipe. Pressure of saturated steam of heat carrier is used as pressure source, partially filling internal volume of pipe sealed on both sides at its heating. Water is selected as heat carrier and tube of flat oval cross section is used. At the same time, the pressure of saturated water vapor is 14.6-19.9 bar, which corresponds to a temperature of 197.5-212 ° C.

proposed utility model relates to power engineering, namely to heat engineering, and can be used in development and creation of heat exchange equipment, in particular, heat exchangers.

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