316 SS welded inside black pipe
316 SS welded inside black pipe
(OP)
I need to weld a 316 SS cone inside a 6" sch 40 black pipe. Can I do this and how? I have SMAW and Tig welders but have never welded these two metals together. Inside pressure will reach at least 650 psi.





RE: 316 SS welded inside black pipe
The welding of these two dissimilar metal welds is common. The recommended filler metal is E309 (SMAW) or ER309 (GTAW).
You should have a qualified welding procedure and welder in accordance with ASME B&PV Code, Section IX. If the internal pressure is 650 psi, you should be following a piping code, like one of the ASME B31.X Standards for welding and inspection requirements.
RE: 316 SS welded inside black pipe
Thank you for your reply when I get it done I'll post how it turned out.
RE: 316 SS welded inside black pipe
Stand well back.