EP 1021257 A1 20000726 - METHOD AND PLANT FOR THE PRODUCTION OF FRUSTOCONICAL PIPES
Title (en)
METHOD AND PLANT FOR THE PRODUCTION OF FRUSTOCONICAL PIPES
Title (de)
VERFAHREN UND ANLAGE ZUR HERSTELLUNG VON KONISCHEN ROHREN
Title (fr)
PROCEDE ET USINE POUR LA FABRICATION DE TUYAUX TRONCONIQUES
Publication
Application
Priority
EP 9703873 W 19970715
Abstract (en)
[origin: WO9903611A1] The invention falls within the sector of frustoconical pipes. The pipe (1) to be formed and welded is fed between calibrating rollers (8) at a speed greater than the tangential speed of said calibrating rollers (8) in the zone of tangency with the pipe (1). The central axis of the pipe (1) is kept at a constant level during feeding of the pipe, while the height at which welding is performed varies. The extension of the active profile of the calibrating rollers (8) is less than the length of the pipe (1) to be formed and welded.
IPC 1-7
IPC 8 full level
B21C 37/08 (2006.01); B21C 37/18 (2006.01)
CPC (source: EP)
B21C 37/0803 (2013.01); B21C 37/185 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9903611 A1 19990128; AT E212257 T1 20020215; AU 3768597 A 19990210; DE 69710102 D1 20020314; EP 1021257 A1 20000726; EP 1021257 B1 20020123
DOCDB simple family (application)
EP 9703873 W 19970715; AT 97934493 T 19970715; AU 3768597 A 19970715; DE 69710102 T 19970715; EP 97934493 A 19970715