To make UPVC windows and doors, you need to follow seven production steps and need the following related machines.
Profile cutting -- double head cutting machine or single head cutting machine
Glazing bead cutting
Welding profiles -- pvc window welding machnine
Copy routing -- single head copy router
End milling --end milling machine
Water slot -- water slot milling machine
Corner cleaning -- corner cleaning machine
Reinforcement cutting -- steel cutting machine
For tha above machines, some are essential, like profile cutting machine, pvc window welding machine; some are optional which you can finished the related steps with handle tools, like corner cleaning machine. What is necessary, and what is optional? It depends on how many plastic windows or doors you want to make per day or per year.