Most mobile welders machines are operated either electrically for arc welding, or as an inert gas welding machine. These are most commonly used for reparation and assembly work, but are applicable for a vast amount of tasks. Check out the used welding equipment for sale from the a vast and wide selection of second hand markets, auction houses and dealers. Here you can find the best quality selection of welding equipment and used welder machines together under one roof. Please check out prices, specs and used welders sales information along with product images below.