SWT-NS700 Geomembrane welder with hot air gun. It can weld geo-membrane of various thickness and are applicable for welding of all thermal-fused material such as LDPE, PVC, HDPE, EVA, PP and PVC,HDPE,EVA,PP. The control of this series adopt PID automatic thermostatic control with high control and low temperature fluctuation. Speed control of this series adopt PWM automatic voltage and regulation speed circuit. Direct current servo the motor drive with great output torque and staple performance in walking. It can maintain a constant speed on the condition of creeping, vertical creeping and road load. Also this series of welding machine are stable in performance despite of external temperature and voltage variation.This series of welding machine is excellent in performance and easy for operating, with high welding speed and good work quality. It is extensively used in engineering projects such as expressways, tunnels, reservoirs, waterproof of construction. Technical Parameter Voltage: 110V/220V±10% Power: 3000W Frequency: 50/60Hz Welding Area: 15mmX2, Test Channel:15mm Dimensions: 352(L) X 267mm(W) X 267mm(H) Weight: 7.5Kg Usage: Plastic Welding Welding Speed: 0.5-4 m/min Welding Temp: 20-600 ℃ Welding Width: 15mm X 2,Cavity 15mm Thickness of Material: 0.5-3.0mm Overlap Width: 160mm International warranty 24months. Any parts broken or does not work under normal operating,we are free to provide.