Socialist are always agitating for nationalizing industries... of course it's all semantics really.
"Anyway according to what I know, state ownership does not imply socialism."
Well then what you know is wrong.
"Iran has plenty of state ownership - is Iran socialist?"
Yes, though not fully.
"Many countries nationalize major industries during wartime to increase production - do they become socialist?"
Yes, although all of them are already socialist to begin with, to some degree or another.
Simple lesson in logic:
If all A support B, does it follow that all of those who support B must be A?
Replace A with "socialists" and B with "nationalization" if you wish.
Now add to this the fact that not all socialists support nationalization, there are plenty of weird ones that don't. In fact we once had a self-proclaimed Communist on this forum who was for private property.
If some A support B, does it follow that all of those who support B must be A?
Hitler was a libertarian socialist. True fact.
Hitler was neither a libertarian nor a socialists, but if you combine those two together, then yeah you can get Hitler. Alternatively you can get a fucked up conspirologist who rants about evil bankers and federal reserve. Which is close enough.