Stainless steel flanges have high mechanical design strength and relatively high extensibility. And, it has very good properties of stainless steel material. Stainless steel flanges are generally used to connect pipes and valves. There are holes in the connecting piece of the flange. The bolt holes are tightly connected with the two flanges. Also, there are gaskets between the two flanges to ensure its good tightness. Due to its excellent properties, stainless steel flanges are widely used in many industries.
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Stainless steel is one of the very powerful metal materials. It has excellent corrosion resistance. Not only can the integrity of the architectural house design be maintained, but it is very easy to produce, process and manufacture， to meet the structural development requirements from architects and designers. There is an oxide film on the surface of the stainless steel flange.Thus, it will not corrode, even if it is in contact with oxygen in the atmosphere. However, other metals react with oxygen in the atmosphere, such as ordinary carbon steel, the iron, will continue to oxidize. The corrosion will continue to expand, forming pores. Therefore, stainless steel flanges stand out among all metal flanges.
Stainless steel material has very good metal material properties, with strong corrosion and rust resistance. It is often used in the production of flanges and other pipe fittings, connecting stainless steel pipe system structures. Stainless steel flange, also known as acid-resistant stainless steel flange, has an extremely smooth surface. It is not easy to oxidize with the atmosphere and then be damaged. It is commonly used to connect strong high pressure and corrosion resistant stainless steel water supply piping systems.
The flange made of other metal materials will react with the air, if it is in a humid environment. This will change the original characteristics of the metal, as well as will cause deterioration and damage. However, stainless steel flanges are rich in chromium-nickel metal elements. After passivation by oxidant, a dense oxide protective film has been formed on its surface, which can effectively prevent surface oxidation. However, the passivation treatment ability of other metal pipes (such as galvanized pipes and copper pipes) is very weak, so the corrosion resistance is far lower than that of stainless steel pipes.
The corrosion resistance shows that stainless steel flanges do not have uniform corrosion properties like ordinary carbon steel and iron materials. So, they do not need any protective layer on the surface during use.
The thermal expansion coefficient of stainless steel flanges is much better than that of copper flanges. Moreover, it is 1.5 times than that of ordinary steel pipe flanges. Compared with copper flanges, stainless steel flanges have the main characteristics of slow thermal expansion and no deformation when shrinking and cooling. In addition, a dense protective film is formed on the surface of the stainless steel flange. Even if it comes into contact with oxygen in the air and is in a humid environment, it will not cause corrosion and rust. These advantages cannot be achieved by flanges of other metal material.
