EP 0370588 A1 19900530 - Method for producing high-strength seamless steel pipes.
Title (en)
Method for producing high-strength seamless steel pipes.
Title (de)
Verfahren zur Herstellung hochfester nahtloser Stahlrohre.
Title (fr)
Procédé de fabrication de tubes en acier sans soudure ayant une résistance élevée.
Publication
Application
Priority
DE 3832014 A 19880916
Abstract (en)
The invention relates to the production of high-strength seamless steel pipes from starting blocks of specific composition which, after heating to 1,150-1,280 DEG C, are rolled out to form pipes and are then subjected to a defined heat treatment. <IMAGE>
Abstract (de)
Die Erfindung betrifft die Herstellung hochfester nahtloser Stahlrohre aus Einsatzblöcken bestimmter Zusammensetzung, die nach Erwärmung auf 1150 - 1280<o>C zu Rohren ausgewalzt werden und danach eine definierte Warmbehandlung durchlaufen.
IPC 1-7
IPC 8 full level
C21D 8/10 (2006.01); C21D 1/20 (2006.01); C21D 9/08 (2006.01); C22C 38/00 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01)
CPC (source: EP US)
C21D 9/08 (2013.01 - EP US)
Citation (search report)
- [Y] GB 2137539 A 19841010 - MANNESMANN AG
- [Y] AT 193914 B 19571210 - OESTERR ALPINE MONTAN
- [A] CH 507373 A 19710515 - MITSUBISHI HEAVY IND LTD [JP]
- [A] EP 0092629 A1 19831102 - UGINE ACIERS [FR]
- [A] FR 1566594 A 19690509
- [A] DE 2649019 B2 19791025
Designated contracting state (EPC)
AT DE ES FR GB IT SE
DOCDB simple family (publication)
US 5019180 A 19910528; AT E89869 T1 19930615; DE 3832014 A1 19900322; DE 3832014 C2 19941124; DE 58904493 D1 19930701; EP 0370588 A1 19900530; EP 0370588 B1 19930526; JP H02115318 A 19900427
DOCDB simple family (application)
US 47704790 A 19900207; AT 89250030 T 19890907; DE 3832014 A 19880916; DE 58904493 T 19890907; EP 89250030 A 19890907; JP 23547389 A 19890911