EP 1084005 A1 20010321 - METHOD FOR BENDING A DOUBLE PIPE, IN PARTICULAR A BIMETALIC PIPE
Title (en)
METHOD FOR BENDING A DOUBLE PIPE, IN PARTICULAR A BIMETALIC PIPE
Title (de)
VERFAHREN ZUM BIEGEN EINER DOPPELROHRE , INBESONDERE EINE BIMETALLISCHE ROHRE
Title (fr)
PROCEDE PERMETTANT DE CINTRER UN TUYAU DOUBLE ET, NOTAMMENT, UN TUYAU BIMETALLIQUE
Publication
Application
Priority
- BE 9900070 W 19990604
- BE 9800434 A 19980605
Abstract (en)
[origin: WO9964180A1] A method for forming at least one bend in a double pipe is disclosed. The double pipe comprises an inner pipe located within an outer pipe. The method essentially comprises the following steps. In a first step, the inner pipe (10) is filled with a compressible material (11). The compressible material (11) is compressed in the inner pipe. In a second step, the double pipe is bent using a pipe bending tool. Then, the filling material (11) is removed from the inner pipe. In a further step, an expanding force is applied to the inner pipe (10) until the outer pipe (12) has undergone a predetermined expansion.
IPC 1-7
IPC 8 full level
B21D 9/15 (2006.01); B21D 26/02 (2006.01); B21D 26/051 (2011.01)
CPC (source: EP)
B21D 9/15 (2013.01); B21D 9/18 (2013.01); B21D 26/051 (2013.01)
Citation (search report)
See references of WO 9964180A1
Designated contracting state (EPC)
BE DE FR GB IT
DOCDB simple family (publication)
WO 9964180 A1 19991216; AU 4124799 A 19991230; BE 1012024 A3 20000404; EP 1084005 A1 20010321
DOCDB simple family (application)
BE 9900070 W 19990604; AU 4124799 A 19990604; BE 9800434 A 19980605; EP 99924597 A 19990604