Pipe expansion method

Details Pipe expansion method Pipe expansion method

B - Operations, Transporting

21

D

B21D 39/08 (2006.01) B21D 39/10 (2006.01) F28D 7/16 (2006.01) F28F 9/16 (2006.01)

Patent

CA 2743267

A pipe expansion method is capable of reducing an inspection range (area) of a heat-transfer pipe secured to a pipe plate and is capable of shortening the time required for inspection. In a pipe expansion method for securing a heat- transfer pipe inserted in a pipe hole of a pipe plate by expanding the pipe, and thereafter refrigerant is supplied to the interior of the heat-transfer pipe, and when the heat- transfer pipe is sufficiently cooled, the refrigerant supply is stopped so that the heat- transfer pipe returns to normal temperature.

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