only PT & macro etch is required (QW-193). Tear test & strength test
are required by EEMUA publication 143. Sometime client calls those
tests.
On May 12, 12:22 pm, "Bathula Raghuram (Mumbai - PIPING)"
<R.Bath...@ticb.com> wrote:
> When a weld meets the requirements of UW20.4, it is a full strength weld and does not require qualification by shear load testing. You can use a normal groove weld PQR and state on WPS joint configuration as shown in fig UW 20.1.
>
> However Tube to tube sheet strength weld mock up qualification may required if called in contract specifications, in this case you may have to qualify PQR as per QW193
>
> -----Original Message-----
> From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of federico.29
> Sent: Wednesday, May 12, 2010 3:05 AM
> To: Materials & Welding
> Subject: [MW:5147] PQR tests for tube to tube-sheet strenght weld joint - ASME sez.VIII div.1
>
> Dear sirs,
> according to ASME sez.VIII div.1, which tests are required to perform in PQR for a tube to tube-sheet strenght weld joint? in particular tear test is required?
> (please give me the reference of para of ASME sez.VIII div.1) material involved is Carbon Steel: A350 (tube-sheet) and A334 (tube) welding process is GTAW machine thickness involved: 70 mm (tube-sheet) and 2.77 mm (tube) Thank in advance Fede Lau
>
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