... contain 8 single welding methods: MMA, DC-argon arc welding, pulsed-argon arc welding, argon arc spot welding, GMAW(CO2/MIG/MAG), pulsed ... -GMAW, double-pulsed GMAW, arc carbon gas cutting welder and contain welding method consisted of ... using the expert databases which are as prominent as the international welding expert.7. Long-distance software upgrade:Nebula carries out ...