Stainless steel tube is a kind of environmental protection materials, to meet health requirements, can be 100% recycled, save water resources, reduce transport costs, reduce heat loss, Stainless Steel Pipe and Tube avoid sanitary ware pollution and other advantages.

1. Life expectancy

The stainless steel tube has the longest service life. From the analysis of the use of stainless steel in foreign countries, the service life of stainless steel pipes can reach 100 years, at least 70 years, Stainless Steel Pipe and Tube as long as the building life.

2 Corrosion Resistance

One of the most prominent advantages of stainless steel tubes is its excellent corrosion resistance, which is best in all kinds of tubing. Because stainless steel can be deactivated with oxidants, the surface forms a tough dense chromium-rich oxide protective film Dr2o3, Stainless Steel Pipe and Tube effectively preventing the further occurrence of oxidative reaction. and other metal pipes, such as galvanized water pipes, copper tube passivation ability is very small, this is galvanized pipe copper tube corrosion resistance is far less than the key reason for stainless steel pipe. Stainless steel does not corrode as evenly as carbon steel, no need to protect the coating; stainless steel pipe, the chemical composition of the water is not limited, because stainless steel in a variety of oxygen content, temperature, ph and hardness of water has a good corrosion resistance; stainless steel pipes can withstand a high flow rate, even if the flow rate is greater than 40 m/s, Still maintain very low corrosion rate, not exceeding 0.003 mm/year, Stainless Steel Pipe and Tube especially suitable for high-rise water supply. Stainless steel generally does not occur local corrosion, 304 stainless steel can withstand the chloride content of 200ppm, 316 stainless steel can withstand the chloride content of up to 1000ppm, this conclusion based on exposure to experimental data and has been used to confirm the experience. The thermal expansion coefficient of stainless steel tube is similar to that of copper tube, Stainless Steel Pipe and Tube which is 1.5 times times that of ordinary steel pipe, which has the characteristics of slow shrinkage and contraction compared with stainless steel tube.

3 Heat and heat preservation

The thermal conductivity of the stainless steel tube is 1/25 of the copper tube, which is 1/4 of the ordinary steel pipe, especially suitable for hot water transportation. The most commonly used stainless steel in the water industry is 316 and 304 stainless steel, which can satisfy most water treatment and transport conditions.

4. Strength

The tensile strength of stainless steel tube is twice times that of steel pipe, the $number times of plastic pipe. The strength of the material determines whether the water pipe is strong and resistant, safe and reliable. Safety and reliability are the most important requirements in building water supply. Stainless Steel Pipe and Tube In the case of external impact, the possibility of a stainless steel water pipe leaking is very small. The working pressure of high building water supply system is generally greater than 0.6Mpa; Thin-walled stainless steel tube due to excellent mechanical properties, can withstand a high water pressure, up to 10Mpa, Stainless Steel Pipe and Tube especially for high-rise water supply.

Stainless steel pipe is an economic cross-section of steel, is an important product in the steel industry, usually accounted for 8% of the total steel 16%, it in the national economy has a very wide range of applications. Because the steel pipe has the hollow section, it is most suitable for the liquid, the gas and the solid transportation pipeline; At the same time, compared with the same weight round bar, the steel pipe has large sectional coefficient and flexural torsional strength, so it also becomes an important material in all kinds of mechanical and structural structures. Structures and components, controlled by stainless steel, Stainless Steel Pipe and Tube have a larger cross-section modulus than solid parts in the case of equal weight. Therefore, the stainless steel tube itself is a kind of economical metal section steel, it is an important component of high efficient steel, especially in the oil drilling, Stainless Steel Pipe and Tube smelting and transportation industry demand, followed by geological drilling, chemical industry, construction industry, machinery industry, aircraft and automotive manufacturing, as well as boilers, medical equipment, Furniture and bicycle manufacturing also require a large variety of steel tubes. With the development of new technologies such as atomic energy, rocket, missile and aerospace industry, stainless steel pipe is becoming more and more important in the defense industry, science and technology and economic construction.

Why the stainless steel tube needs to be solid solution, because the solid solution of the alloying element in stainless steel tube increases with the increase of temperature, therefore, when heating to a certain temperature above, the precipitation of alloy elements or compounds at low temperature will be more solid solution. Stainless Steel Pipe and Tube When it is cold, the substance which is supposed to be precipitated is dissolved within the matrix metal. The treatment method of this forced-solution alloying element is called solid solution treatment. The austenite microstructure of stainless steel tube is also the result of solid solution treatment, and its mechanical properties are specified in stainless steel standard. It is because of the blocking of the mass fraction of 0.1% carbon and in the form of carbide precipitated, so it has anti-corrosion properties. Carbon in 800 鈩 above the rapid solid solution, Stainless Steel Pipe and Tube at 1000 鈩 above its solid solution is about 0.1% of the mass fraction. As a result, JIS provides for the solution of heat treatment at around 1000 鈩 temperature.