The class 4500 in ASME B16.34 is for butt welding end valves. P91 material is listed in there under material group number 1.15 (9Cr 1Mo V).
Elaborate on what you are looking for.
Correct you subject from stem to steam.
Sajit Viswan
Save a tree...please don't print this e-mail unless you really need to. Received on Tue Apr 03 01:08:00 2007
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