No, you can not do final pass or capping GTAW with the same WPS . You have not mentioned your WPS details and applicable code however for Root if GTAW is used then max weld metal qualification range will be only twice .
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If your job is of 32 mm thk and 6 meter dia why can't you prefer SAW or GMAW process
On Saturday, July 26, 2014, harenath jha <harenathjha@gmail.com> wrote:
-- On Saturday, July 26, 2014, harenath jha <harenathjha@gmail.com> wrote:
Hello Expert,--
I am having a wps which is done with GTAW (Root)+ SMAW (Fill-up and final),
Can we weld a joint in the following sequence
Root with GTAW , Fill-up with SMAW and final pass or capping with GTAW ?
Is there any code supporting details ?
plate thick. 32 mm & dia approx 6 meter
Regards
Aakash
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