Main Features 1.This welding machine is made up of machine head, frame,electronic controller box, profile holding frame, etc. 2.It adopts good sliding circle guide rails,also with strong frame body 3.The left head can move 20mm by following the track. Every head has their separate location structure, pressing structure, heating structure and head box. 4.Its with advanced technology, reliable function and easy operation. 5. It adopts PC control, pneumatic driving and locating.