... Welding Machine 3.Welding Arc Stability. Submerged arc Welding Machine VRTMZ-1250IGBT welderMain features:l Featured by constant current and voltage output ... °Dimensions (mm): 690 ×335 ×905Weight (kg): 100Submerged arc Welding Machine VRTMZ-1000IGBT welderMain features:l Featured by constant current and voltage ... (mm): 690 ×335 ×905Weight (kg): 85 Submerged arc Welding Machine VRTMZ-1250IGBT welder