WELDING OF SS316L plug with DUPLEX tubes

[khalidkhattak]

CAN WE USE SS316L PLUGS TO WELD ON A-789 S31803? FOR WELDING WHAT FILLER WIRE TO BE USED? CAN WE USE ER-2209?
INFORMATION WOULD BE APPRECIATED.
REGARDS

 

[metengr]

Use ER-2209 filler metal for joining the plug to the tube. Keep the interpass temperature during welding below 350 deg F. No preheat, and no PWHT.

 

[rmw]

Are you welding the plug to the tube, or to the tubesheet, and if the tubesheet, what is the tubesheet (or tubesheet overlay if any) material?

rmw

 

[khalidkhattak]

THANKS metengr..thats what i was expecting...
RMW.. The welding of the plug is on tube seal welds. We do not touch tubesheet for welding purpose..
THANKS again