This is a video of heating PVC pipe with a far-infrared line heater.
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Related page:
Heating of polyethylene sheet 
Heating glue stick (EVA material) 
Heating of plastic containers 
Copper pipe and Aluminum pipe brazing 
Uniform heating of Printed Circuit Boards 
Uniform heating of EVA resin mat 
Heating demonstration of Holing PET bottle by the Air Blow Heater 
Uniform heating of Rubber sheet