EP 0976466 B1 20020814 - Method and device for the manufacture of a tube from strip material
Title (en)
Method and device for the manufacture of a tube from strip material
Title (de)
Verfahren und Vorrichtung zum Herstellen eines Rohres aus Bandmaterial
Title (fr)
Procédé et dispositif pour la fabrication d'un tube à partir de matériau en bande
Publication
Application
Priority
DE 19834400 A 19980730
Abstract (en)
[origin: EP0976466A2] The method of making thin wall metal tubes involves cold forming a thin metal blank into an increasing curved section with the edges (4) closed and then welded together. The partially formed blank (3) is first twisted around a quarter turn and, prior to welding closed, is rotated back slightly. The claims also include a machine for carrying out the method.
IPC 1-7
IPC 8 full level
B21C 37/08 (2006.01); B21C 37/083 (2006.01); B21D 5/12 (2006.01)
CPC (source: EP)
B21C 37/08 (2013.01); B21C 37/083 (2013.01); B21D 5/12 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB IT LI NL PT SE
DOCDB simple family (publication)
EP 0976466 A2 20000202; EP 0976466 A3 20001018; EP 0976466 B1 20020814; AT E222149 T1 20020815; DE 19834400 C1 20000105; DE 59902324 D1 20020919; DK 0976466 T3 20021216; ES 2182429 T3 20030301
DOCDB simple family (application)
EP 99109817 A 19990519; AT 99109817 T 19990519; DE 19834400 A 19980730; DE 59902324 T 19990519; DK 99109817 T 19990519; ES 99109817 T 19990519