EP 1304176 A3 20040630 - Method for the continuous production of longitudinally seam welded metal tubes
Title (en)
Method for the continuous production of longitudinally seam welded metal tubes
Title (de)
Verfahren zur kontinuierlichen Herstellung eines längsnahtgeschweissten Metallrohres
Title (fr)
Procédé de fabrication en continu de tuyaux métalliques soudés longitudinalement
Publication
Application
Priority
DE 10151827 A 20011020
Abstract (en)
[origin: EP1304176A2] Process for continuous production of a straight bead-welded metal pipe comprises pulling a metal sheet (2) from a reservoir, gradually forming a pipe with an open longitudinal slit, and soldering or welding the longitudinal slit. A lubricant is introduced into the open seam pipe (4). <??>Preferred Features: A lubricating oil is introduced dropwise into the open seam pipe behind the weld point using a lance (9). The longitudinal slit is closed by laser welding.
IPC 1-7
IPC 8 full level
B21C 1/22 (2006.01); B21C 9/02 (2006.01); B21C 37/08 (2006.01); B23K 1/16 (2006.01); B23K 26/00 (2006.01); B23K 26/20 (2006.01); B23K 101/06 (2006.01); B23K 103/04 (2006.01)
CPC (source: EP US)
B21C 37/08 (2013.01 - EP US)
Citation (search report)
- [X] WO 9947287 A2 19990923 - HUYNH OANH [US], et al
- [X] DE 2301373 A1 19740718 - KABEL METALLWERKE GHH, et al
- [X] US 4137446 A 19790130 - BLANPAIN JACQUES, et al
- [X] US 4283824 A 19810818 - SCHATZ FRIEDRICH, et al
- [X] GB 850636 A 19601005 - ALBERTA PHOENIX TUBE & PIPE LT
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
EP 1304176 A2 20030423; EP 1304176 A3 20040630; BR 0204235 A 20030916; CA 2408886 A1 20030420; CN 1411923 A 20030423; DE 10151827 A1 20030430; JP 2003181532 A 20030702; MX PA02010335 A 20050713; MY 129193 A 20070330; SG 106103 A1 20040930; US 2003075588 A1 20030424; US 6685082 B2 20040203
DOCDB simple family (application)
EP 02292398 A 20020927; BR 0204235 A 20021018; CA 2408886 A 20021018; CN 02147571 A 20021015; DE 10151827 A 20011020; JP 2002303984 A 20021018; MX PA02010335 A 20021018; MY PI20023901 A 20021018; SG 200206092 A 20021007; US 27326902 A 20021018