EP 0912264 B1 20000202 - PROCESS FOR MANUFACTURE OF PRECISION STEEL TUBES
Title (en)
PROCESS FOR MANUFACTURE OF PRECISION STEEL TUBES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON PRÄZISIONSSTAHLROHREN
Title (fr)
PROCEDE POUR FABRIQUER DES TUBES DE PRECISION EN ACIER
Publication
Application
Priority
- DE 9701452 W 19970704
- DE 19628714 A 19960708
Abstract (en)
[origin: DE19628714C1] The invention relates to a process for the manufacture of precision steel tubes by cold forming of tube blanks, in particular in a plurality of forming stages, with or without an internal tool. A tube blank of interstitial-free steel (IF) is used as the starting material.
IPC 1-7
IPC 8 full level
B21C 1/00 (2006.01); B21C 1/22 (2006.01); C21D 8/10 (2006.01); C22C 38/00 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01)
CPC (source: EP US)
B21C 1/22 (2013.01 - EP US); C22C 38/001 (2013.01 - EP US); C22C 38/12 (2013.01 - EP US); C22C 38/14 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 19628714 C1 19971204; DE 59701097 D1 20000309; EP 0912264 A1 19990506; EP 0912264 B1 20000202; US 6290788 B1 20010918; WO 9801242 A1 19980115
DOCDB simple family (application)
DE 19628714 A 19960708; DE 59701097 T 19970704; DE 9701452 W 19970704; EP 97932754 A 19970704; US 21469199 A 19990208