Stainless steel flange metal performance is good, and has a strong corrosion resistance, often used in steel structures, for example, stainless steel flange, stainless steel flange also become rust-proof steel flange, its metal surface is smooth, not easy with air oxidation, so often used in high-pressure water pipes and corrosion of the pressure pipe, here and everyone to share the excellent performance of stainless steel flange.
First of all, as a metal material in the humid environment will react with the air, so as to change the original metal properties, but the stainless steel flange can react with oxidant passivation, on the surface to form a layer of tough dense chromium oxide protective film $literal, stainless steel flange effectively prevent 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.
Then the stainless steel flange corrosion resistance performance, stainless steel flange will not be the same as carbon steel uniform corrosion, use without protective coating; stainless steel flange using stainless steel flanged water pipe, there is no limit to the chemical composition, 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, no more than 0.003 mm/year, particularly suitable for high-rise water supply. Stainless Steel flange tube thermal expansion coefficient and copper tube, is the common steel pipe 1.5 times times, stainless steel flange compared to stainless steel flange fittings have the characteristics of slow expansion and contraction.
In addition, the stainless steel flange general occurrence of chemical reactions are holistic, will form a layer of protective film on its surface, this is not other metal.
