Your statement is littlebit confusing for me,pls clarify whether i need to qualify seperate pqr(saw root+smaw outside after backgrinding) or shall i take the support of full saw pqr + full smaw pqr and make new wps alone.
Note:There is no backgrinding in any of these available PQR.
Because SAW ID & OD are welded same time so no backgrinding required for exsisitng wps/pqr,whereas for the new one SAW welded inside & outside we are backgrinding & doing smaw .
regards,
kk
On Mon, 28 Jun 2010 08:50:54 +0530 wrote
>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
>
>From: krishna
>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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