Door and window hardware refers to a collective name for various metal and non-metallic accessories installed on the doors and windows of a building. It plays an auxiliary role in opening and closing doors and windows. The surface is generally plated or coated, which is strong, durable, flexible, economical and beautiful. So what exactly does the door and window hardware mean?

Building door lock
    Install locks on door leafs and door frames of buildings that need to be opened and closed. It is generally composed of lock body (including bolt door and window hardware, operating mechanism and braking mechanism), lock panel, handle, cover plate, etc. The lock tongue is divided into oblique tongue, square tongue, double tongue, bead tongue and hook tongue. The lock panel is divided into flat mouth, left tongue, right tongue and round mouth, and the handle has a spherical shape, a curved handle and Pull the ring apart. Building door locks can be divided into door locks, room door locks, bathroom door locks, windproof door locks and toilet door locks according to the occasion of use. According to the insurance performance, they can be divided into single insurance, double insurance and triple insurance door locks. Divided into exterior door locks, mortise door locks and spherical door locks.
    ① Exterior door lock: The lock body covers the surface of the door leaf. The main products are single-tongue single-safety door locks, single-tongue double-safety door locks, single-tongue three-safety door locks, double-tongue three-safety door locks, double-tongue double-lock three-door safety locks, and multi-tongue double-lock three-door safety locks. Wait.
    ② Mortise door lock: The lock body is embedded in the door leaf from the side of the door leaf. There are two types of blade structure and marble structure. The main products are sliding door mortise door lock, single square tongue mortise door lock, single oblique tongue mortise door lock, single oblique tongue button mortise door lock, double tongue mortise door lock, double tongue mortise pressure mortise door lock, Blade handle door lock and so on.
    ③ spherical door lock: beautiful appearance, easy to use, mostly used in high-grade buildings.
Handle
    Used to open and close metal window sashes. It is usually installed in the middle of the edge of the window sash, and some are also designed as a mechanism that connects the door and window hardware with the latch. It is usually made of brass, low carbon steel, zinc alloy, stainless steel and other materials, and its surface is plated with nickel, chromium or zinc.
Slip brace
    Used to position the opened metal sash. Generally installed on the lower edge of the sash, and some are also designed to be used in conjunction with the hinge. It is usually made of brass, low carbon steel, zinc alloy, stainless steel and other materials, and its surface is plated with nickel, chromium or zinc. Varieties include eye support, two-arm support, rocking support, mobile support and so on.
hinge
    Also called hinge. It is a door and door frame, window and window frame connection, which can make the door and window rotate freely and open and close the door and window hardware. The hinge is made up of blades and pins. The blade is made of low-carbon strip steel and can rotate freely around the pin. The pin is made of low-carbon cold-drawn steel wire or spring steel wire. There are common hinges, spring hinges and window hinges.
door closer
    An appliance capable of automatically closing or fixing an opened door leaf in a certain position. Some have the function of hinges, and some have fire resistance. The main varieties are floor springs, door top springs, door slingshots, door controllers, door chucks, magnetic door suction heads, etc.
    ① Floor spring: also known as ground dragon. Installed in the lower part of doors and windows. It is made of gray cast iron, carbon steel, spring steel, cast steel and other components and assembled.
    ② Door top spring: Automatic door closing device that uses the spring force of spring-type spring or coil spring to close the door leaf. A buffer cylinder is installed inside to reduce the closing speed.
    ③ Door slingshot: punched from low-carbon strip steel and equipped with a low-carbon cold-drawn steel top rod, which closes the door by the action of spring force.
    ④ Door stopper: A simple positioner for braking door leaf and avoiding collision between door leaf and wall. Installed at the lower corner of the door leaf, the door leaf can be positioned at any angle.
    ⑤ Door chuck: Fix the device to open the door leaf. It consists of a knife-shaped base and a triangular steel chuck. There are two types of horizontal and vertical. The base is made of gray cast iron; the chuck is made of spring steel, and the surface is blued.
    ⑥ Magnetic door suction head: It has the same function as the hardware of the door clamp window and door.
Latch
    Used to latch doors and windows when they are closed. There are many types such as common type, closed type, tube type, butterfly type pin and concealed pin, upper and lower connecting long pins, and window pin. Made of low-carbon steel.
Window hook
    Installed on a wooden window to securely open the sash. Generally made of low-carbon steel wire, and the surface is galvanized.
Anti-theft chain
    Also known as the safety chain. It consists of two chain plates and a connecting chain. The chain plates are respectively installed on the door leaf and the door frame. The anti-theft chain can limit the door leaf to a small opening angle (generally not greater than 8 °), effectively preventing outsiders from entering.
Induction door opening device
    Electronics for automatic door opening. The main components are microwave or light-controlled induction contacts. It can automatically input the human body or object's induction signal to make the door leaf open or close automatically. Generally used with automatic doors and transmission machinery.