tig weldng :) 2'' diameter ,St35.8 metal pipe amp's 90 welding position 45° procedure of welding (my welding) 2x joints one on 6h other on 12h i weld by splitting pipe on 3 thirds on each side of pipe (to split heat) so i start first left side 1/3 then i switch to right side 1/3 and to 2/3 till last...