EP 0099737 A2 19840201 - Forming helical grooves in tubes.
Title (en)
Forming helical grooves in tubes.
Title (de)
Herstellung von schraubenförmigen Rippen in Rohren.
Title (fr)
Façonnage de rainures hélicoidales dans des tubes.
Publication
Application
Priority
AU 488382 A 19820715
Abstract (en)
A method and apparatus for forming helical grooves (6) in the outer surface of stainless steel tubes (2). The technique utilizes a forming roller (16), which forms the groove and a shoe (22) follows in the groove which has just been formed a short distance behind the roller so as to eliminate buckling of the tube.
IPC 1-7
IPC 8 full level
B21D 15/04 (2006.01)
CPC (source: EP)
B21D 15/04 (2013.01)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0099737 A2 19840201; EP 0099737 A3 19850522; AU 1690083 A 19840119
DOCDB simple family (application)
EP 83304117 A 19830715; AU 1690083 A 19820715