EP 0205828 B1 19891018 - METHOD AND USE OF A STEEL FOR MANUFACTURING STEEL PIPES WITH A HIGH RESISTANCE TO ACID GASES
Title (en)
METHOD AND USE OF A STEEL FOR MANUFACTURING STEEL PIPES WITH A HIGH RESISTANCE TO ACID GASES
Publication
Application
Priority
DE 3520702 A 19850610
Abstract (en)
[origin: US4721536A] For increasing the resistance of steel pipes or tubes against acidic medium, by a combination of a heat treatment and the use of an alloyed steel, a compressure stress is built up on the side of the tubes or pipes facing the acidic medium, of up to 30% of the yield limit.
IPC 1-7
IPC 8 full level
C21D 8/10 (2006.01); B23K 9/23 (2006.01); C21D 9/14 (2006.01); C21D 9/50 (2006.01); C22C 38/00 (2006.01); C22C 38/54 (2006.01)
CPC (source: EP US)
Citation (examination)
DIN 17172 (Mai 1978)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0205828 A1 19861230; EP 0205828 B1 19891018; AT E47428 T1 19891115; CA 1258571 A 19890822; DE 3666461 D1 19891123; JP S6254022 A 19870309; US 4721536 A 19880126
DOCDB simple family (application)
EP 86105810 A 19860426; AT 86105810 T 19860426; CA 511222 A 19860610; DE 3666461 T 19860426; JP 13292686 A 19860610; US 87240586 A 19860610