EP 1926837 B1 20140312 - PROCESS FOR MANUFACTURING COLD-FORMED PRECISION STEEL PIPES
Title (en)
PROCESS FOR MANUFACTURING COLD-FORMED PRECISION STEEL PIPES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON KALTGEFERTIGTEN PRÄZISIONSSTAHLROHREN
Title (fr)
PROCEDE DE FABRICATION DE TUBES D'ACIER DE PRECISION FABRIQUES A FROID
Publication
Application
Priority
- DE 2006001457 W 20060818
- DE 102005046459 A 20050921
Abstract (en)
[origin: WO2007033635A1] A method is disclosed for manufacturing cold-formed, in particular cold-drawn, precision steel pipes for use, in particular, as cylinder pipes under pressure, with optimum admixture of one or more alloying elements, as well as impurities which result from the steel-making process. A soldered pipe blank which is seamlessly hot-formed or produced from a rolled strip, and has a defined initial state, is drawn into a finished pipe in one or more passes, and the pipe is tempered before the final pass.
IPC 8 full level
C21D 9/08 (2006.01); C21D 1/25 (2006.01); C21D 6/00 (2006.01); C21D 9/14 (2006.01); C22C 38/04 (2006.01)
CPC (source: EP KR US)
C21D 6/00 (2013.01 - KR); C21D 9/08 (2013.01 - KR); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP KR US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2007033635 A1 20070329; BR PI0616367 A2 20110614; BR PI0616367 A8 20180508; BR PI0616367 B1 20171128; CA 2622410 A1 20070329; CA 2622410 C 20150505; CN 101268203 A 20080917; DE 102005046459 A1 20070412; DE 102005046459 B4 20131128; EP 1926837 A1 20080604; EP 1926837 B1 20140312; ES 2470674 T3 20140624; JP 2009509040 A 20090305; JP 5679632 B2 20150304; KR 20080063313 A 20080703; PL 1926837 T3 20140930; UA 88573 C2 20091026; US 2008302452 A1 20081211
DOCDB simple family (application)
DE 2006001457 W 20060818; BR PI0616367 A 20060818; CA 2622410 A 20060818; CN 200680034763 A 20060818; DE 102005046459 A 20050921; EP 06775881 A 20060818; ES 06775881 T 20060818; JP 2008531521 A 20060818; KR 20087009217 A 20080417; PL 06775881 T 20060818; UA A200804698 A 20060818; US 6775606 A 20060818