Which welder qualification is required for welding dissimilar steels?
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As the title suggests, when welding Q345R and S30408, which welder qualification test should be used?
First, you need to determine what welding method to use and at which location to weld; you can find out by searching online.
As for TSG Z6002. You need to take the Fe-IV exam
Refer to the \"0111-TSG Z6002-2010 Guidelines for Assessing Welders of Special Equipment\\": location, welding method, diameter, and thickness are not taken into account; only the material type matters, and Fe-IV+Fe-III or Fe-IV+Fe-II is required