EP 0281641 B1 19890830 - PROCESS FOR IMPROVING THE CORROSION RESISTANCE OF HARD OR SEMI-HARD COPPER FITTING TUBES
Title (en)
PROCESS FOR IMPROVING THE CORROSION RESISTANCE OF HARD OR SEMI-HARD COPPER FITTING TUBES
Publication
Application
Priority
EP 87103276 A 19870307
Abstract (en)
[origin: EP0281641A1] 1. Method to improve the corrosion resistance of hard or half-hard phosphorus-deoxidized copper tubes, drawn to size, by removal of residual lubricant from the tubes inside surface, wherein the tube is heated to a temperature below the range of recristallisation of the tubes, and wherein an oxidizing atmosphere prevails inside the tubes.
IPC 1-7
IPC 8 full level
C22F 1/02 (2006.01); C22F 1/08 (2006.01); C23G 5/00 (2006.01)
CPC (source: EP)
C22F 1/02 (2013.01); C22F 1/08 (2013.01); C23G 5/00 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR IT LI NL
DOCDB simple family (publication)
EP 0281641 A1 19880914; EP 0281641 B1 19890830; AT E45993 T1 19890915; DE 3760510 D1 19891005
DOCDB simple family (application)
EP 87103276 A 19870307; AT 87103276 T 19870307; DE 3760510 T 19870307