[MW:3441] Qualification of cladded base metal

Dear All,

 

I have one query regarding welding qualification of cladded base metal. Our first base metal is Stainless steel 316L to weld with second base metal P5A cladded with Stainless steel 316L. A layer of ENiCrMo-3 was buttered on bevel of second base metal by other. As i know a layer of ENiCrMo-3 act as barrier layer. The problem is how to qualify the welding procedure on stainless steel 316L to P5A cladded with Stainless steel 316L. Is it i need to qualify  P5A cladded with Stainless steel 316L or Stainless steel 316L to inconel ENiCrMo-3 or Stainless steel 316L to Stainless steel 316L procedure. I really need your advice and expertise. What is the best practice or code requirement on qualification of cladded base metal. Advance thank for your kind cooperation and really appreciated

Regards

Tong2je

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