... roofing welder, PVC Roofing welding machine,Plastic welding machine(PVC,TPO ,EVA membrane) Description:This welding machine can add weight additional ... , it become a ideal product for welding PVC,TPO ,EVA membrane.Feature:Welding products for large-scale sheet and film processing, ... Air volume: 25m3/h Air pressure: 3000Pa Welding speed: 1-15m/min Welding width: 40mm Water proofing and roofing welder, ...