I have a substantial amount of Inconel clad CS piping ranging from 8" - 32". The average WT of the CS is 19mm, with a 3mm thick Inconel cladding. My problem is that I have numerous 3/4" instrument connections that require weldolet or weldoflange connections. I must ensure that the Inconel coats the inside of the instrument connection & the drilled out section of the CS piping. My Client states that oversize drilling and Inconel weld overlay is not acceptable as the 3/4" hole is too small for such actions. He feels that the welder will make a mess of the overlay in such a heavy walled pipe and small hole. Can anyone suggest a way to weld a 3/4" solid Inconel weldolet to 19mm thick CS piping (Inconel clad)? Many thanks.
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