2-head welding machine for plastic doors and windows 1) used for welding different shapes and combination 2)with programming control and pneumatic driving systems 3) high reliability,large processing range and easy operation 4)The two heads can work individually,simultaneously and combinatively working air pressure 0.4-0.6MPa air consumption 100L/min power supply 380V/220 50Hz input power 2.5kw welding length 400-3300mm welding profile height 20-100mm welding profile width ≤120mm outside dimension 4300x1000x1700mm weight(about) 950kg