... door panel welding machine 1. auto weld, ultrasonic 2. PLC control,high precision 3.30~70 seconds/pc Automobile Door Panel Welding ... automobile spare parts welding equipments for: automobile door panel welding, automobile instrument panel welding, car lights welding, sun shading board ... Features and Function: Accord to different size of door panel, can design the welding way as spot welding or ...