It really depends on the clients procedures for those tubes. Everyone is different. Just because one company welds it one way doesn't mean the next one will. But you need to know the code & procedure they are using.
If you are working to D1.1, GTAW is not considered to be a prequalified process. If you are working to a qualified WPS, the EOR has the final say on whether or not he will accept the WPS. John Wright