KFC doors need to meet some conditions before manufacturing and processing, and only when they meet the processing conditions can they meet the specifications. Let's take a look at the manufacturing and processing conditions of KFC doors with Jinan KFC doors: The selection of profiles should be made from the door and window series product catalogue, considering the functional requirements. In the series of products, the profile section and accessories have their overall unity in installation. When selecting the profile according to the opening mode of the window, we should pay attention to whether it is open horizontally inside or outside, whether it is pushed and pulled left and right or pulled up and down. We should choose the profile specially designed for this kind of opening mode according to different opening modes. Heat transfer coefficient k of the window The heat transfer coefficient k of the whole window is determined by the heat transfer coefficient of the door and window sash and the heat transfer coefficient of the glass * * *, which should be considered comprehensively to meet the specified heat transfer coefficient requirements. The selected profiles should meet the requirements of wind pressure resistance of doors and windows. Can be selected according to experience, and then check the wind pressure. If the window is used in a high-rise building, or the window size is large, the wind pressure resistance performance must be calculated. The selection of hardware should meet the requirements of the function and durability of the door and window, and the selection of hinges, sliding supports, pulleys and other accessories should meet the requirements of the bearing capacity of the door and window, and adapt to the size of the installation notch of the window frame fan profile accessories. The hardware of KFC doors shall comply with the General Requirements for Hardware of Building Doors and Windows (JC/T 212). Sound insulation performance, the sound insulation performance r of doors and windows depends on the sash structure, glass structure and glass mosaic method. Glass inlaying, glass inlaying mode, glass weight and thickness affect the selection of door and window sash profiles and accessories. The width of the notch of the window frame facing the profile should be able to accommodate the thickness of the glass and the glass sealing material on both sides.