(19)
(11) EP 1 644 682 A1

(12)

(43) Date of publication:
12.04.2006 Bulletin 2006/15

(21) Application number: 04742196.1

(22) Date of filing: 14.07.2004
(51) International Patent Classification (IPC): 
F28D 1/03(1985.01)
B21D 53/04(1968.09)
F28F 3/04(1968.09)
(86) International application number:
PCT/FI2004/000453
(87) International publication number:
WO 2005/005904 (20.01.2005 Gazette 2005/03)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

(30) Priority: 15.07.2003 US 487429 P

(71) Applicant: Outokumpu Copper Products Oy
02100 Espoo (FI)

(72) Inventors:
  • ROTTMANN, Edward, G.
    Bowling Green, KY 42104 (US)
  • BENNETT, Donald, L.
    Franklin, KY 42134 (US)
  • GOEBEL, Timothy, L.
    Woodburn, KY 42170 (US)
  • ANDERSSON, Stieg
    S-73040 Kolbäck (SE)
  • TANG, Liangyou
    Cottontown, TN 37048 (US)

(74) Representative: Zipse + Habersack 
Wotanstrasse 64
80639 München
80639 München (DE)

   


(54) PRESSURE CONTAINING HEAT TRANSFER TUBE AND METHOD OF MAKING THEREOF