Stainless steel corrugated metal hose short hose, is a modern industrial pipeline a high quality flexible pipe. It mainly consists of bellows, nets and connector components. Its inner tube having a spiral or annular thin-walled stainless steel bellows; bellows outer nets, is made of stainless steel wire or strip according to certain parameters woven. Connector or flange ends of the hose with the joint or mating pipe flange customers. Bellows stainless steel bellows is made extremely thin-walled stainless steel seamless or longitudinal weld through high-precision plastic processing forming. Since the elastic bellows profile determines the hose has good flexibility and fatigue resistance, making it very easy to absorb deformation and cyclic loading of various sports, especially the ability to compensate for the large amount of displacement in the piping system. Corrugated metal hose has good flexibility, fatigue resistance, high pressure, high temperature resistance, corrosion resistance, and many other features, it is relative to other hoses (rubber, plastic hoses) for life to be much higher, so it but also has a higher overall cost. Corrugated metal hose is widely used in aerospace, aviation, petroleum, chemical, steel, electricity, paper, construction, rubber, textile, printing and dyeing, pharmaceutical, food, transportation, machinery and equipment, and many other industries, with a light weight, small size, corrosion resistance, fatigue, temperature resistance, high pressure, softness, tightness and other characteristics.Stainless steel bellows Selection: many variable factors to characterize the corrosion medium, i.e., chemicals and their concentration, state of the atmosphere, temperature, time, so do not know if the correct properties of the medium, to use the material, it is difficult to select the material. However, the following can be used as selection guide.
Materials
1. Type 304 stainless steel bellows are widely used in construction to withstand general corrosion, erosion resistant food processing medium (but high temperature component containing the concentrated acid and chloride corrosion may occur), resistant to organic compounds, dyes and a wide variety of inorganic compounds. Type 304L (low carbon), and good resistance to nitric acid, and durable medium temperature and concentration of sulfuric acid, widely used as a liquid gas tank, used for cryogenic equipment (304N), other consumer products, appliances, kitchen equipment, hospital equipment, transport tools, waste water treatment apparatus.
2. Type 316 stainless steel bellows type 304 stainless steel contains slightly more than a nickel, and contains 2% – 3% molybdenum, good corrosion resistance than the 304, especially tend to cause pitting corrosion in chloride media. Type 316 stainless steel has been used for the development of sulfite pulp machine, because it is durable sulfuric compounds. Moreover, its use has been expanded to deal with a lot of chemicals in the processing industry.
3. Stainless steel bellows 317 containing 3% – 4% molybdenum (high level in this series is obtained), and 316-type stainless steel containing more than chromium, having a higher resistance to pitting and crack corrosion.
4. Type 430 stainless steel bellows Type 304 stainless steel alloy is lower than the content of the atmosphere is used in the mild high polished decorative purposes, can also be used nitric acid and food processing equipment.
5. Type 410 stainless steel bellows with a generalized use of stainless steel in the three lowest alloy content, you need the strength and corrosion resistance with high load-bearing parts to choose from, such as solid pieces. Type 410 stainless steel in the mild air, water, gas, chemical products, and many moderate corrosion medium.
6. 2205 stainless steel bellows type than stainless steel type 304 and type 316 stainless steel is superior, because he has a high chloride stress corrosion cracking resistance, and has about twice the strength. But for home use stainless steel bellows for stainless steel 201 and 304 are the most common.
