I have a situation where we use a combination of SMAW and FCAW for welder qualification of piping, the root of the weld was welded using SMAW up to 5mm and the filler up to the reinforcement was welded up to 7.5mm of a total material thickness of 12.5mm and pipe diameter 6"(150mm). Based on table 4.11 AWS D1.1 it mentioned in it if the diameter more than 100mm and the nominal thickness less and equal to 10mm then the max qualification is 20mm and if the nominal thickness is more than 10mm considering it has the same diameter of 6mm then the max qualification is unlimited. My question is for the combination process above will it be qualified for unlimited or limited up to 20mm? Will the SMAW and FCAW welders be qualified for thickness over 20mm considering they only welded 5mm and 7.5mm of the total of 12.5mm since they welded less than 10mm thick each process?

If a welder passes a 3G + 4G test with FCAW on 1" plate are they qualified to weld fillet welds in all positions on HSS Box tube?  (Including the radiused area).