Stainless steel flange has good metal performance and strong corrosion resistance. It is often used in steel structure parts, such as stainless steel flange. Stainless steel flange has also become stainless and acid resistant steel flange. Its metal surface is smooth and not easy to oxidize with air, so it is often used in high-pressure water pipes and corrosive pressure pipes. Stainless steel flange has excellent performance.
First of all, as a metal material, it will react with air in humid environment, thus changing the original metal properties. However, stainless steel flange can be passivated with oxidant, forming a tough and compact chromium rich oxide protective film Cr2O3 on the surface, and stainless steel flange can effectively prevent further oxidation reaction. However, the passivation ability of other metal pipes, such as galvanized water pipe and copper pipe, is very small, which is the key reason why the corrosion resistance of galvanized copper pipe is far less than that of stainless steel pipe. Then, the corrosion resistance performance of stainless steel flange shows that stainless steel flange will not have uniform corrosion like carbon steel, so no protective coating is required during use; stainless steel flange adopts stainless steel flange water pipe, which has no limitation on the chemical composition of water Stainless steel has good corrosion resistance in water with various oxygen content, temperature, pH and hardness; stainless steel water pipe can withstand a very high flow rate, even if the flow rate is more than 40 m / s, it still maintains a very low corrosion rate, not more than 0.003 mm / year, especially suitable for high-rise water supply. The coefficient of thermal expansion of stainless steel flange pipe is similar to that of copper pipe, which is 1.5 times of that of ordinary steel pipe. Compared with stainless steel flange pipe, the expansion and contraction of stainless steel flange pipe are slow.
In addition, the chemical reaction of stainless steel flange is generally integral, which will form a protective film on its surface, which other metals can't do.
