Tuesday, March 19, 2019

Re: [MW:29302] wps

Most projects are prohibited retainer backing, that reason of root layer should GTAW or backing weld.


Regards
Bien ND
Sent from my Blackberry
From: 'HENNING John' via Materials & Welding
Sent: Monday, March 18, 2019 22:54
To: materials-welding@googlegroups.com
Reply To: materials-welding@googlegroups.com
Subject: RE: [MW:29293] wps

No.  See below – it is a non-essential variable that must be addressed on the WPS but to change it does not require a new procedure qualification.

 

 

 

QW-402.4 The deletion of the backing in single

welded groove welds. Doublewelded groove welds are

considered welding with backing.

 

 

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of A.y
Sent: Wednesday, March 13, 2019 3:36 AM
To: Materials & Welding
Subject: [MW:29263] wps

 

addition backing in smaw process for wps is a essential Variables?

 

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