... membranes structure high frequency welding machine. professional welding tents, air domes, banners, truckcovers. Tensile membranes high frequency welding machine 1. Professional for welding tent, canvas ... WS-5000S / WS-8000S / WS-10000S / WS-15000SD Power output: 4,000W, 5,000W, 8,000W, 10,000W ... ,15,000W Voltage: 50 / 60HZ, AC380V, 3P Power input: 7kVA, 9kVA, 15kVA, 18kVA, 25kVA Rectifier: silicon ...