... Fan-cooling; 2.Movable iron core transformer used; 3.Excellent welding characteri DESCRIPTION: 1.Fan-cooling;2.Movable iron core transformer ... used;3.Excellent welding characteristics;4.For welding of low-carbon or low-ally steels;5 ... but with high efficiency. Including: BX1-160, BX1-200, BX1-250, BX1-315, BX1-400, BX1-500, BX1-630 series, etc... Welding Machine