Re: [MW:27373] If a welder is qualified with SS (Stainless Steel) GTAW, He can weld CS Carbon steel GTAW?

Please check gas backing is essential variable for welder qualification. 

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On Sat, Feb 24, 2018 at 6:23 PM, sankar rao

<sankarkorukonda@gmail.com> wrote:

If welder qualified with SS 

(GTAW Process),

He can weld CS ( GTAW Process)

Because of F.No's same for both SS &CS  for GTAW 

SS ---- F.NO 6.  SFA NO. 5.9

CS----- F.NO 6.   SFA NO. 5.18

On 24 Feb 2018 14:50, "'Prashant Panchal' via Materials & Welding" <materials-welding@googlegroups.com> wrote:

Since he may have used backing gas for SS gtaw he will not be qualified for carbon steel as we do not use backing gas for cs material. 

Alternatively u will have to use backing gas for cs as well

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On Sat, Feb 24, 2018 at 3:33 PM, PK M

<pkmqaqc@gmail.com> wrote:

Dear Sir,

If a welder is qualified with SS (Stainless Steel) GTAW,  He can weld CS Carbon steel GTAW? Need code Referance...

Thanks.

PKM

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