QW 200.4 (b)

qaqcmpm · **Joined:** Wed Sep 24, 2008 11:45 am **Posts:** 64

Code:

QW 200.4 (b) For GTAW, SMAW, GMAW, PAW, and SAW,
or combinations of these processes, a PQR for a process
recording a test coupon that was at least 1⁄2 in. (13 mm)
thick may be combined with one or more other PQRs
recording another welding process and any greater base
metal thickness.

If i want to combine a PQR1 (gtaw-8mm+smaw-16mm) with another one of higher thk, can i use gtaw as root in the combined PQR here ?
or as the gtaw is less than 13mm thk i cannot use this PQR1?

Gonzaga · **Joined:** Sat Dec 15, 2001 1:00 am **Posts:** 610

qaqcmpm wrote:

Code:

QW 200.4 (b) For GTAW, SMAW, GMAW, PAW, and SAW,
or combinations of these processes, a PQR for a process
recording a test coupon that was at least 1⁄2 in. (13 mm)
thick may be combined with one or more other PQRs
recording another welding process and any greater base
metal thickness.

If i want to combine a PQR1 (gtaw-8mm+smaw-16mm) with another one of higher thk, can i use gtaw as root in the combined PQR here ?
or as the gtaw is less than 13mm thk i cannot use this PQR1?

I assume your WPS has T= (8+16) = 24 mm
You can use for 2t (GTAW=16 mm) for root pass on bas metal having T= the T of the second WPS
Mauro

qaqcmpm · **Joined:** Wed Sep 24, 2008 11:45 am **Posts:** 64

thank you

QW 200.4 (b)

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