Dear Bro,
According to QW 352 : deletion of backing is an essential variable .
QW : 420 Base metal grouping : welder is qualified for P.no 1 to 15F. But the only thing is Backing gas.
Regards
M.Riyas
+968-97193523
On 24 Feb 2018 2:03 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
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
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