... smoke 3Free samples... Application: welding electrode for steel constructio APOLLO E7018 WELDING ELECTRODES 2.5mm x 300mm, 3.2mm x 350mm ... 400mm. Packing: 5kgs/box, 20kgs/carton/pallet. welding electrodes: AWS E7018 Available size: 2.5*300/350mm/3.2*350mm/4 ... , machinery-manufacture, vessels and various structures of low carbon steel E7018 Electrode