You can use combination of these processes to weld a base metal thickness (T) of up to 20mm max.
From:
Sent: Saturday, March 22, 2008 2:07 PM
To:
Subject: [MW:683] Re: Section IX QW 200.4(b)
Yes Sanjeev
U can use GTAW for root deposit as per QW 200.4b.
shabbir
On 3/21/08, jitendra Thakor <jitendrathakor@gmail.com> wrote:
Dear Sanjeev
As per QW200.4(b) it is mandatory that your GTAW PQR thickness should
be minimum 13 mm. than you use GTAW as root as qualified in PQR.
Regards
Jitendra
On Fri, Mar 21, 2008 at 2:11 PM, sajeev c.g <sajeevmech@yahoo.com> wrote:
> Dear all,
>
> I have to prepare a WPS from two PQR's as per section IX.
> PQR 1 qualified in 10mm coupon full GTAW
> PQR 2 qualified in 40mm coupon SMAW+SAW(20mm deposit each)
>
> Can i write a WPS to weld GTAW (root) + SMAW+SAW?
> As per QW200.4(b) is it mandatory that the PQR 1 will be qualified in 13mm
> minimum to write a WPS as above?
>
> Regards
> sajeev
>
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