One of the test project in welding school was to roll a big radius tube from a sheet of metal 3mm thick and welding it. The main attention was paid to the root of the weld. The welding was performed using MAG 135 welding process and evaluated according to the ISO 5817:200 welding class C specifications. The welding was performed mainly in the PA position. Given that the C-class allows quite a lot of flexibility in terms of weld tolerances, the work was within the requirements for the root and has got the highest evaluation.
