It is designed to make double welding on corners of PVC profiles. Welding can be done in one operation of 90 degrees, controlled by a fully automatic PLC system. The right head can be easily moved on the ball teeth system. Right head is automatically fixed with pneumatics pressure system. The heating system is fully controlled with an automatic digital system. Flow control during welding in profile clamping cylinders. One head can weld different angles from 30 to 180 degrees. Easily replaceable Teflon. All parameters can be adjusted individually. A protective system that avoids working in low flow conditions. Practical replacement of the welding template. Machine has 0.2 mm blade for cutting over weld in profile.