We usually believe that the main components of aluminum alloy doors and windows are glass, door and window frames, and hardware accessories. Most glass is tempered glass. The door and window frames are made of aluminum alloy profiles and have a broken bridge structure. Hardware accessories play an important role in aluminum alloy doors and windows. It is divided into three categories: hardware, sealing materials, and auxiliary parts.

 The opening and closing process of doors and sliding windows must be completed with the help of hardware accessories. Moreover, even the quality of doors and windows has an extremely important impact on hardware accessories.
 
 
 1. Hardware parts classified by product
 
 According to the product, aluminum alloy door and window accessories are divided into: handles, hinges (hinges), transmission locks, sliding brackets, support blocks, bolts, multi-point locks, pulleys, single point locks, etc.
 
 
 2. Classification by usage method
 
 Aluminum alloy door and window accessories are divided into door hardware and window hardware. According to the usage method, it can be divided into sliding door hardware and flat window hardware.
 
 1) Sliding doors and windows
 
 The opening method of sliding doors and windows is formed by guide rails and pulleys fixed at the bottom of the door and window frames. The smoothness of sliding doors depends on the neat quality of the pulleys, the flatness of the profiles, the machining accuracy, and the installation accuracy of the door and window frames.
 
 2) Horizontal opening doors and windows
 
 One of the accessories for swing doors and windows is the hinge. Hinges are installed outdoors, that is, the hinges of inner doors and windows are installed indoors, and the hinges of outer doors and windows are installed outdoors. Door and window locks are usually swing locks, and the handle is usually combined with the lock. A plug is an essential part for opening doors and windows from the outside, which can prevent wind from blowing through the door and window frames and frequent collisions. However, the stability of the fixed plane formed by two hinges and three points of the stopper is limited.