First it is not a question of combining WPS's. You can write multiple WPS using multiple PQR's. in this case either you can use the same or prepare a separate WPS with the said combination, as long as all other essential variables (such as T and t limits) as per supporting PQR's.
More than one WPS having different essential, supplementary essential, or nonessential variables may be used in a single production joint. Each WPS may include one or a combination of processes, filler metals, or other variables (QW200.4)
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of manoj john
Sent: Tuesday, August 10, 2010 8:50 AM
To: materials-welding@googlegroups.com
Subject: [MW:6404] COMBINED WPS & pqr
Dear All,
I have the following qualified WPS as per ASME sec. IX
1) Material Group : P1 (pipe - without backgouging)
Welding process : SMAW
Filler Metal : E 6010 Root run and E 7018 Subsequent run
2) Material group : P1 (plate - with back gouging)
Welding process : FCAW
Filler Metal : E71T
Can I combine these above two WPS to weld Pipe of material SA 106 Gr B root run with SMAW E6010 and subsequent run FCAW E71T .
Thank you with warm Regards,
Manoj
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