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Re: [MW:35762]

By Materials & Welding
Understood, and thanks for the clarification. For a nozzle joint welding in a boiler, third party
agencies allow SMAW process in general.
CS

On Tue, 12 Aug 2025 at 22:45, pankaj pachahara <pankajpachahara@gmail.com> wrote:
We have made SMAW+SAW WPS but now using that previous PQR we will qualify SMAW process for nozzle in Boilers we don't have approved WPS for GMAW/FCAW so that's why we need to make for SMAW. 

Best Regards
Pankaj 

On Tue, 12 Aug 2025 at 9:54 PM, sridhar cn <sridharcn305@gmail.com> wrote:
One out of way query:
Why use SMAW process for a 111 mm thick weld deposit? SAW is OK for balance 109 mm thickness.
SMAW is inefficient compared to GMAW/FCAW  processes. They have an efficiency of 85 to 90%  
compared to 30-40% in SMAW (due to use of E 7018) and will reduce your welding time and cost factor.
Think for a better change!
C Sridhar.

On Tue, 12 Aug 2025 at 17:24, pankaj pachahara <pankajpachahara@gmail.com> wrote:

Dear Welding Experts,


We have recently completed PQR qualification on a 220 mm thick joint using a combination of SMAW + SAW processes. 

Material-SA 5160 GR.70 

  • SMAW deposited thickness: 111 mm(E7018-1)

  • SAW deposited thickness: 109 mm(EH10K)


I now need to prepare a WPS for the SMAW process only. Could you please clarify up to what thickness this WPS will be qualified for based on the deposited SMAW thickness?

Best Regards

Pankaj

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