... follows:1. DN15-300 Tube Welding Unit Tube diameter: DN15~DN300mmWall thickness: δ≥0.2-1.2mmControl: inverter controlThe parts will go with ... (made in China) 5). Voltage rating: Motor 380V, argon welder 220V Our equipments have been exported to Russia,Ukraine, Brazil, Turkey ... , Indonesia, South Africa, Vietnam and so on. Stainless steel tube welding machine