pvc three-head welding machine for plastic doors and windows 1)used to weld plastic window and door 2) PLC controlled pneumatic drive 3) with high automatic, better reliability, wide work range 4) three nose can work personlly at same time or cooperation each other working air pressure 0.4-0.6MPa air consumption 150L/min power supply 380v / 220v 50Hz input power 3.5kw welding length 400-3300mm welding profile height 20-100mm welding profile width ≤120mm outside dimension 4300 x 1000 x 1700mm weight(about) 1200kg