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Anonymous Poster #1

Material/Welding

12/13/2011 3:09 AM

Dear All

I am asking for the best welding procedure for joining 1 inch diam branch pipe of stainless steel (austanatic), to a Cu-Ni 5 inches diam main pipe.
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PWSlack
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#1

Re: material/welding

12/13/2011 3:12 AM

Does it have to be welded (rhetorical question)? How about a clamp-on branch, a valve and a hot-tapping tool?

Further, why is a stainless steel pipe being connected to a CuNi pipe? If the material in the pipe requires CuNi, isn't stainless steel the poorer relation? Why not go for a CuNi branch pipe?

It all goes back to:

  • What's in the pipe?
  • At what temperature?
  • At what pressure?
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