[MW:28146] BONNET CLADDING WELDING || GTAW || FILLER WIRE SELECTION

Dear team,

Reference to the above mention subject, i would like to know selection of filler wire when welding cladding material for following situation.

1. I have job having below M.O.C for heater bonnet, 

 CHANNEL PLATE M.O.C - SA 240 GR 304

 BODY FLANGE M.O.C - SA 516 GR 70

 CLADDING RING M.O.C - SA 240 GR 304

(also find attachment for design joint)

Now my query is on selection of filler wire, can i use following filler wire for above situation

1. ER 309 LMO - It is for root run between body flange and channel plate for above situation. 

2. ER 308L - For subsequent layer and final run.

Also can i use wps qualifying with following criteria?.

(see attachment-WPS-1)-For root run welding

(see attachment-WPS-2)-For subsequent & final layer welding.

Or i need to qualify additional wps using two filer wire.

Thanks in advance

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