annual tender for the supply of various welding electrodes annual tender for the supply of various welding electrodes on staggered delivery basis , supply of various sized and purpose welding electrodes on annual staggered delivery basis. , ms general purpose 3.15 mmwelding electrode , ms general purpose 4 mm welding electrode , 4 mm cast iron machinable welding electrode make : esab, ador, l&t ewac, superon , 4 mm cast iron non machinable welding electrode make : esab, ador, l&t ewac, superon , e 8018 4 x 450 mm welding electrodes , e 308, 4 x 350 mm welding electrodes , e 6013 4 x 450 mm welding electrodes , e 7018 4 x 450 mm welding electrodes , e 7018 3.15 x 450 mm welding electrodes