Hardware:
Which installed in the building or furniture metallic devices and some small tools, such as nails, screws, wire, locks, hinges, bolts, springs and so on are all called hardware. Hardware refers to a gold, silver, copper, iron, tin, five metal materials, the mother of hardware for the industry, the defense base of nation.

Metal materials products, usually divided into two major categories of large and small metal hardware. metal plate, steel, flat iron, omnipotent angle iron, slot home hardware iron and all kinds of iron steel materials are all refer to large metal hardware; building hardware, tin, Locks, nails, wire, steel wire, wire cutting, home hardware, tools and so on are all refer to small hardwares. To the nature and purpose, hardware should be devided into steel materials, non-ferrous metal materials, machinery parts, transmission equipment, auxiliary tools, work tools, construction hardware, household hardware total eight categories.

Categories
Building hardware is installed in all buildings on a variety of equipment or furniture, accessories, components. Building hardware is divided into five categories according to the scope of application:

① door hardware, including locks, handles, bolts, hinges, window hooks, door closers, door bell, etc.;

② furniture hardware, including cabinet handles, Corner, a leaf, lock, etc.;

③ plumbing hardware, including a variety of indoor heating and water supply of small diameter pipe, valves, steam traps, exhaust valves, etc.;

④ bathroom hardware, including shower equipments, water tank accessories, hook, towel rack, soap dish, handrails, bathtub and wash basins faucets, flush valve, etc.;

⑤ structure of hardware, including a variety of nails, wood screws, wire, metal mesh, ceiling hook, all kinds of fasteners.

Raw materials
Traditional architectural hardware, mainly raw material is metal, such as the common carbon steel cold-rolled steel, cold drawn low carbon steel wire, a variety of copper, aluminum, light metal alloys and malleable cast iron. Surface treatment materials are copper, nickel, chromium, silver and so on. In recent years, developed a variety of non-metallic materials, such as ceramics, glass, rubber, plastic and so on. Particularly the use of polyamide, polypropylene and other engineering plastics manufacturing all kinds of plastic hardware, such as hardware and plumbing hardware in bathroom. These not only high quality plastic products, shape, beautiful color, decorative effect, and high efficiency, low cost, can save a lot of non-ferrous metals, the application has become increasingly widespread.

Processing
Generally as the main raw materials of sheet metal products using stamping process. Some use of casting process, and then after rough machining. The products obtained are generally required for assembly after surface treatment. As the raw material of plastic hardware products, the use of extrusion, injection, blow molding and finishing or surface treatment.

Performance
Building hardware performance, must ensure accurate dimensions, precision parts to parts. appearance and the surface must be bright and even. In addition, a variety of products in accordance with the use of functions are provided with control targets. Building hardware is the internal structure of industrial and civil buildings and facilities of the important parts, not only has the use of functional, but also the increasing demand for a decorative effect and reflects a certain artistic level, in order to adapt to the modern construction industry.