Seamless welding aluminum alloy doors and windows are made by the process of seamless welding machine, which is superior to traditional aluminum alloy doors and windows in all aspects. It has two characteristics: 1. Beautiful appearance, better heat preservation and sealing performance: seamless welding aluminum alloy doors and windows is an upgraded version, which adopts seamless welding technology, and the external aluminum is flat and simple; No concave convex feeling, more beautiful and more decorative; It can make doors and windows better sound insulation and heat insulation. 2. The frame is more solid, not easy to deform, and prolongs the service life of doors and windows: the thermal expansion and cold contraction of external aluminum due to seasonal changes may cause water seepage of doors and windows due to gaps, thus causing corrosion of internal profiles, endangering the service life of doors and windows. If the doors and windows adopt the seamless welding process, the above problems can be avoided. The window frame is more solid, and the door and window joints are sprayed more evenly.