CA1293854C - Dispositif servant a la fabrication de tuyaux
- Google Patents
Dispositif servant a la fabrication de tuyaux
Info
Publication number
CA1293854C
CA1293854CCA000493454ACA493454ACA1293854CCA 1293854 CCA1293854 CCA 1293854CCA 000493454 ACA000493454 ACA 000493454ACA 493454 ACA493454 ACA 493454ACA 1293854 CCA1293854 CCA 1293854C
Authority
CA
Canada
Prior art keywords
starting sheet
longitudinal edges
inner pipe
tool
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SRT SOLIDRESIST-ROHRTECHNIK GmbH
Original Assignee
SRT SOLIDRESIST-ROHRTECHNIK GMBH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SRT SOLIDRESIST-ROHRTECHNIK GMBHfiledCriticalSRT SOLIDRESIST-ROHRTECHNIK GMBH
Priority to CA000493454ApriorityCriticalpatent/CA1293854C/fr
Application grantedgrantedCritical
Publication of CA1293854CpublicationCriticalpatent/CA1293854C/fr