What is hardware? It is a general term which refers to metal tools used in the building and furniture. There are a lot of hardware products. They can be grouped into big hardware and small hardware. The former refers to steel materials, such as steel plate, steel bar, channel iron, flat iron. The later often refers to the following items, such as construction hardware, tin plate, iron wire, household hardware, and tools. According to its property and function, the hardware also can be grouped into eight classifications, namely steel material, non-iron metal material, mechanical parts, transmission equipment, auxiliary tool, work tool, construction hardware and household hardware.
Owing to the limited space and time, the article will mainly introduce the small hardware. It has a lot of varieties and specifications. It plays a very important role in the room decoration. Only through choosing the good hardware components can people use the decorating material safely and conveniently. At present, there are about hundreds of kinds of small hardware products in the market.
The small hardware products in the market can be classified as follow:
(a) Lock series: door lock, drawer lock, window lock, electric lock, lock body and so on.
(b) Handle series: drawer handle, door handle.
(c) Hardware for door and window: hinge, chain, bolt, floor spring, door close, patch fitting, plate, roller latch and so on.
(d) Small hardware door household decoration: flexible wheel, air pipe, stainless steel dustbin, metal hanging brace, curtain rod, hand ring, seal strip, clothes hook, clothes hanger and so on.
(e) Water and heating hardware: pipe, valve, floor drain, tape and so on.
(f) Small hardware for construction: iron pipe, stainless steel pipe, plastic pipe, nail, bolt, screw, glass holder, insulating tape, aluminum alloy ladder, product bracket and so on.
(g) Tools: steel saw, pincer, screw driver, measuring tape, drill and so on.
(h) Sanitary hardware: tap, shower, soap rack, rack, mirror, soap dispenser, hand dryer and so on.
(i) Kitchen hardware: sink, faucet, washer, cooker hood, gas stove, oven, water heater, pipeline, gas tank, sterilizer, rice cooker, hand blower, fridge and so on.
There are many types of materials for making stainless steel screws, and they can be divided into several categories according to the structure at room temperature: austenitic type: such as 304, 321, 316, 310, etc.; martensite or ferrite type: such as 430, 420, 410 Wait; Austenite is non-magnetic or weakly magnetic, while martensite or ferrite is magnetic. Due to component segregation or improper heat treatment during smelting, a small amount of martensite or ferrite in austenitic 304 stainless steel will result. In this way, 304 stainless steel will have weak magnetic properties. After 304 stainless steel is cold worked, the structure will also be transformed into martensite. The greater the degree of cold working deformation, the more martensite transformation and the greater the magnetic properties of the steel. Like a batch of steel belts, Φ76 tubes are produced without obvious magnetic induction, and Φ9.5 tubes are produced. Because the bending deformation...
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