Multiple finned tube and a method for its manufacture

Details Multiple finned tube and a method for its manufacture Multiple finned tube and a method for its manufacture

F - Mech Eng,Light,Heat,Weapons

28

F

F28F 1/36 (2006.01) B21C 37/20 (2006.01) B21D 53/06 (2006.01) F28F 1/42 (2006.01) F28F 13/18 (2006.01)

Patent

CA 2150588

A metallic finned tube having multiple fins integrally formed on and extending helically on an outside of the tube. The fins number at least four and begin at fin run start locations spaced evenly about a circumference of the tube, with at least one group of side-by-side helical fins being formed which begin at substantially the same circumferential fin run start location on the tube exterior. The method of the invention assures an economical manufacture of the finned tube embodying the invention.

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