 World War I caused a major surge in the use of welding processes , with the various military powers attempting to determine which of the several new welding processes would be best . The British primarily used arc welding , even constructing a ship , the " <unk> " with an entirely welded hull . Arc welding was first applied to aircraft during the war as well , as some German airplane fuselages were constructed using the process . Also noteworthy is the first welded road bridge in the world , the <unk> Bridge designed by Stefan <unk> of the Lwów University of Technology in 1927 , and built across the river <unk> near Łowicz , Poland in 1928 . 
