EP 1647340 B1 20080220 - Method of manufacturing a flexible, on the inside smooth, corrugated pipe, and a corrugated pipe manufactured thereby
Title (en)
Method of manufacturing a flexible, on the inside smooth, corrugated pipe, and a corrugated pipe manufactured thereby
Title (de)
Verfahren zum Herstellen eines flexiblen, im Inneren glatten Wellrohres, sowie ein nach dem Verfahren hergestelltes Wellrohr
Title (fr)
Méthode de fabrication d'un tuyeau ondulé et flexible, qui est lisse à l'interieur, et tuyeau ondulé fabriqué par cette méthode
Publication
Application
Priority
DE 102004049766 A 20041012
Abstract (en)
[origin: EP1647340A1] Production of flexible internally smooth corrugated tube with an inner smooth metal band (4) of the same width as the outer bent metal band (2). The corrugated tube has a bent groove (16) passing along the center. Independent claims are included for: (1) a device for carrying out the process; (2) a corrugated tube with an inner band in stainless steel.
IPC 8 full level
B21C 37/12 (2006.01)
CPC (source: EP)
B21C 37/121 (2013.01); B21C 37/123 (2013.01); B21C 37/124 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1647340 A1 20060419; EP 1647340 B1 20080220; AT E386597 T1 20080315; DE 102004049766 B3 20060608; DE 502005002895 D1 20080403; ES 2298903 T3 20080516; PT 1647340 E 20080602
DOCDB simple family (application)
EP 05021761 A 20051006; AT 05021761 T 20051006; DE 102004049766 A 20041012; DE 502005002895 T 20051006; ES 05021761 T 20051006; PT 05021761 T 20051006