Dear sir, thank you for giving me advices
if there is any information or documentation on this issue, all will be considered. if not, Ernicrmo-3 will be used, but it is really too expensive.
Do you have any documentation on this issue that I can refer to?
Dear sir,
In the recommendations I only see mention that if the working temperature is above 700 degrees F then 309 cannot be used. Also I can't find any other document that talks about using 309 as a butter layer between ErnicrMo-3 and 7018.
as for other requirements i cant find any mention...
It is argued that the use of e309 and 7018 should only be done if welding from both sides is possible.
Will weld CS layer first with 7018 then weld e309 and finish by welding incoloy 825 layer so i'm a little confused
Hello All
When access from both sides are not possible, like welding clad pipe to clad pipe, generally the full joint is welded with the high alloy. (Clad pipe is CS(ASTM A234 WPB) + Incoloy 825). In this case Er Ni CR Mo-3 and E NiCrMo-3 is used. This has been my experience.
Now a contractor...
