Butt weld end preparation between clad and no clad pipe

[Dr. Drew]

Hello, gentlemen!
We prepare the weld qualification for butt weld of X65 pipe cladded with Inconel 625 to no cladded pipe X65. Could you, please, advise where I can find acceptable scheme for weld joint preparation (ASTM, API etc.) ? Proposed joint configuration attached (picture). Thanks in advance!

 

[EdStainless]

I have no spec basis for it, but I have always cut the clad back twice as far as I expect the weld bead.
In the end you want some margin between the weld and the end of the clad.

 

[LittleInch]

So does the requirement for cladding mysteriously stop at the weld?

I've usually seen this sort of thing occur at a flange, but not clad to non cladding.

Hence why no one thinks about it, but I would go with Ed on this one.

 

[Dr. Drew]

Thanks a lot Ed and LittleInch! But what about angle of beveling for Inconel layer? Is 30 degree OK?

P.S. About the place where it occurs: it is pipeline without cladding (subsea) welded to pup-piece with cladding (which is welded to valve with cladding).