Installed on the door leaf and door frame of some buildings that need to be opened and closed. Generally, it consists of a lock body (including the door and window hardware of the bolt, the operating mechanism and the brake mechanism), a lock panel, a handle, a cover plate and the like.
Generally installed in the middle of the edge of the window sash, and some are also designed to connect the bolt to the door and window hardware. It is made of brass, low carbon steel, zinc alloy, stainless steel and other materials, and the surface is plated with nickel, chromium or zinc.
Generally installed on the lower edge of the sash, and some are also designed to be used with the hinge. It is made of brass, low carbon steel, zinc alloy, stainless steel and other materials, and the surface is plated with nickel, chromium or zinc.
Also known as the hinge. It is the connection between the door and the door frame, the window and the window frame, which enables the door and the window to rotate freely and open and close. The hinge is formed by connecting the blade and the pin. The hinged varieties have common hinges, spring hinges and hinged hinges.
An appliance that automatically closes or secures an open door leaf to a location. Some have the function of hinges, and some have fire resistance. The main varieties are floor springs, door top springs, door slingshots, door gates, door clamps, magnetic door tips and so on.