new welding machine. ARC-140 series inverter DC/MMA welderCharacteristic: Advanced invert ... anti sticking of welding rod, suited for all kinds’acid and alkaline welding rod, supporting cellulosic welding rod downward welding. Suit for low carbon steel, ... alloy steel, all ferrous metal can get good quality welding seam. Widely used for oil pipeline, petrochemical, car, shipbuilding, boiler, nuclear ...