Ring butt welder for filter bag cage, General Specification Model: UR-40Input voltage: 380V (2 phase) Power frequency: 50HzCooling method: Natural cooling Air pressure: 0.6-0.8 MPaInsulation grade: FPower capacity: 40 KVAWorking load: 15 KVAAir flow: 200 L/minFeatures 1. High speed, capable of welding 8000 rings per 8-hour shift 2. Small heat affected area, approximately 3-4mm, especially applicable for welding galvanized wire 3. This equipment is not recommended to weld stainless steel rings, there is an argon arc welding machine availablespecificly for welding stainless steel ring, the operating method is the same