It's very difficult to give an equivalence. I'll give you some "equivalent" grade. I was faced to same problem and I built my installation according to PED.
I'll come.
Room temp & seamless :
EN 10216-1 P195TR2
EN 10216-1 P235TR2
EN 10216-1 P165TR2
High temp & seamless :
EN 10216-2 P195GH
EN 10216-2 P235GH
EN 10216-2 P165GH
.....
Fine grain & seamless :
EN 10216-3
Low temp & seamless :
EN 10216-3 P215NL
EN 10216-3 P255QL
EN 10216-3 P265NL
....
I think I can also use:
for high temperature,carbone steel piping:
EN 10216-1 P265TR1
EN 10216-2 P265GH
EN 10217-1
...
and for low temperature, carbone steel piping:
EN 10216-4 P255
...
thanks,
Leyla
your question is not clear enough.
Is the casting for the European marked? What is the volume, the pressure and medium? Is it a part ofa vessel , piping or valve ?