Monday, June 28, 2010

Re: [MW:5763] multiprocess qualification(SAW+SMAW)

hi,
you can use two wps & pqr...i.e..if you have wps of SAW root and another wps and pqr of SMAW ...So you should have two WPS & PQR as follows..
1.WPS & PQR for SAW only or SAW (root) + SMAW (cover) or any other process
2.WPS and PQR for SMAW or GMAW(root) + SMAW(Cover)
Regards,

 
Karthikeyan.S
 
Getabec Energy Co.,Ltd.
379,Moo6,Soi8,Nikhomphatana,
Rayong-21180,
Thailand.
Phone: 0066 38 897035-8 (Off)
Fax: 0066 38 897034
Hand Phone: 0066 892512282


--- On Sun, 6/27/10, krishna <wiqw@rediffmail.com> wrote:

From: krishna <wiqw@rediffmail.com>
Subject: [MW:5759] multiprocess qualification(SAW+SMAW)
To: materials-welding@googlegroups.com
Date: Sunday, June 27, 2010, 1:13 PM

Frnds,
Here our job is welding of spiral pipes by GMAW + SAW.
Root is continuos tack welded by GMAW & ID & OD WELDED BY SAW.For this we have separate WPS & PQR.

In spiral pipe we have coil joints weld(skelp joints)for that we are doing root & ID welding by SAW but OD welded by SMAW.For this we don't have separate WPS & PQR.Instead we have only SMAW wps/pqr.I mean no multiprocess WPS/PQR.

Now my question is DO we need to qualify a separate PQR for this coil joint(skelp joint welding)i.e SAW + SMAW.

OR is it possible TO prepare a separate WPS taking the support of GMAW + SAW PQR & also SMAW PQR?

Pls tell all your opinion in respect to ASME SEC IX.

THANKS,
KK
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