Thanks for reply. I understand that for any these kind of welds we need to have PQR & WPS. However, have anybody practical experience of welding PII pipe with A312-TP321H without cladding. please also mention service for which this piping system is in use. In my case service is natural gas &...
I would like to know the requirement of inconal Cladding on 1¼Cr. ½Mo. (PII) pipe & its PWHT prior to its welding to Stainless steel piping (SS321H)
Ayaz