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Re: [MW:35866] SET ON ASME SEC IX

By Materials & Welding
QW-403-16 is only applicable for welder qualification.

Thanks & Regards

J.Gerald Jayakumar

0091-8838619635



On Monday 20 October, 2025 at 09:54:07 am IST, venkateswara reddy Desireddy <dvreddy82@gmail.com> wrote:


In QW 202.4  dissimilar base metal thickness.
There is a two conditions ,one is 6mm or grater another 38mm or grater.
Based on P number we have to choose WPS for branch welds. 

For butt welds L seam, C seam in  thicker material will do tapering, in this condition thinner material thickness we will take for WPS selection.

QW-403-16 for set in ,set on joints pipe OD details given.

From: materials-welding@googlegroups.com <materials-welding@googlegroups.com> on behalf of Anandhapadmanabha pillaim <anandhapadmanabhapillaim1997@gmail.com>
Sent: Sunday, October 19, 2025 9:14:31 PM
To: materials-welding@googlegroups.com <materials-welding@googlegroups.com>
Subject: Re: [MW:35847] SET ON ASME SEC IX
 
While considering the thickness, if it's a dissimilar thickness, the thickness of the smaller one and upper one should fall as per QW-451.1 if the qualification is made on a 38mm thickness coupon, the upper limit you will get unlimited still the lower one should fall within the WPS or you can combine 2 PQR and make one WPS inoder ro cover upper as well as lower limit.

On Sat, 18 Oct 2025, 11:41 am Elavarasan Mech, <elavarasan1861994@gmail.com> wrote:
Dear All
As per ASME SEC IX Nozzle branch connection Set on which thicknesss consider for ( Nozzle or main pipe)WPS & WQT selection 

Regards 
ELAVARASAN

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