The machine is used for producion line of hi-grade alu-alloy doors and windows. mainly used for extrusion and connection of 90º sean casement window with angle jointing operation, place an angle-alu in cavities of two driven stricking blocks punch towards the flute of angle-alu, Extruding the seam of two profiles makes trength, effciency and precision of the connection higher than using any means for connection。