Door and window hardware according to its use functions are: hinges, door closers, positioners, locks, handles and handles, curtain rails and windshield at the bottom of the door. The hinge is a piece of furniture copper. Commonly known as the hinge. Often formed into a two-fold type, it is a metal piece that connects the two parts of the furniture and enables it to move. A device for attachment or rotation that allows a door, cover or other oscillating member to be rotated, typically a pair of metal blades joined by a pin. In general, there are several types of hinges: Ordinary hinge: The hinge is fixed on the frame on one side and fixed on the fan on the other side. It can be turned open and is suitable for wooden doors and windows and general wood furniture. Lightweight hinges: The hinges are thinner and narrower than ordinary hinges, and are mainly suitable for light wooden doors and windows and general wood furniture. Square hinge: The hinge plate is wider and thicker than the ordinary hinge. Mainly used for doors and windows or furniture with large weight and size. T-shaped hinge: suitable for wider door leaf, such as factory, warehouse gates, etc. H-shaped hinge: It is a kind of core-drawing hinge, in which a piece of sheet can be removed. Mainly used on wooden doors or screen doors that need to be dismantled frequently. Screen door spring hinge: The door leaf can be automatically closed after opening, and can only be opened in one direction. The pin of the hinge can be withdrawn to adjust and change the spring, and is mostly used on the screen of the solid steel structure. Bearing hinge (copper): Each of the hinges of the hinge has a one-way thrust ball bearing. The door switch is light and flexible, and is used for heavy duty doors or special steel frame steel doors. Cold storage door hinge: surface baking lacquer, large size made of steel plate, small size made of cast iron. Used on cold storage doors or heavy insulation doors. Beveled detachment hinge: This hinge uses the weight of the hinge and the weight of the door leaf to automatically close the door. Mainly used on light doors such as wooden doors or toilets. The core pull hinge: the hinge axis (pin) can be pulled out. After extraction, the door and window sash can be removed for easy scrubbing. Mainly used on wooden doors and windows that need to be dismantled frequently. Scallop hinge: The two sheets of the scalloped hinge are half thicker than the thickness of the general hinge, and are suitable for all kinds of doors and windows that need to be turned on and off. Silent hinge: Also known as nylon washer hinge, when the door and window switch, the hinge is silent, mainly used on the doors and windows of public buildings. Single-flag hinge: The hinge is made of stainless steel, which is rust-resistant and wear-resistant and easy to disassemble. Mostly used on double-glazed windows. Folding window hinges: When installing, the two sheets with the mandrel should be installed on both sides of the window frame, and the two sheets without the mandrel should be installed on both sides of the window sash. One of the slotted non-mandrel negative plates shall be mounted on the side of the sash groove to allow the sash to be loaded and unloaded. Used for flipping windows on factories, warehouses, houses, public buildings, etc. Multi-function hinge: When the opening angle is less than 75°, it has an automatic closing function. When it is in the 75°-90° angular position, it is self-stabilizing, and when it is greater than 95°, it is automatically positioned. This hinge can be used on the door instead of the ordinary hinge. Anti-theft hinge: ordinary hinge, when the shaft is pulled out, the door leaf can be removed, the anti-theft hinge, through the self-locking action of the pin and pin hole on the two sheets of the hinge, can avoid the door leaf being unloaded, and It has anti-theft effect and is suitable for residential houses. Two-axis hinge: The two-axis hinge is divided into two types, which can make the door freely open, close and disassemble. Suitable for general door and window sashes. Spring hinge: The door leaf can be automatically closed after opening, the single spring hinge can only be opened in one direction, and the double spring hinge can be opened in both directions. Mainly used on the gates of public buildings. The above is a detailed description of the types of hinges. In the process of installing hinges, you need to pay attention to the following points: 1. Before installation, check whether the hinge matches the door and window frame and the fan. Second, check whether the hinge slot and hinge height, width and thickness match. Third, it should be checked whether the hinges and the screws and fasteners connected to them are matched. Fourth, the connection of the hinge should match the material of the frame and the fan. For example, the hinge used for the steel frame wooden door, the side connected to the steel frame is welded, and the side connected with the wooden door fan is fixed by wood screws. 5. In the case where the two sheets of the hinge are asymmetrical, it should be discriminated which board should be connected to the fan, which one should be connected to the door and window frame, and the side connected to the three sections of the shaft should be fixed with the frame. The side connected to the two sections of the shaft shall be fixed to the frame. 6. When installing, ensure that the hinges on the same fan are on the same vertical line to prevent the door and window fans from bounce. 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