Stainless Steel Butterfly Valve corrosion resistance

   Stainless Steel Butterfly Valve is based on the stainless steel material surface formed a thin and strong thin thin stable chromium-rich oxide film (protective film) , to prevent oxygen atoms continue to infiltrate, continue to oxidize, and obtain the ability to resist corrosion; once for some reason, this film has been constantly destroyed, the air or liquid oxygen atoms will continue to infiltrate or metal iron atoms continue to separate out to form loose iron oxide, Stainless Steel Butterfly Valve is also continuously rust; In general, the content of chromium in stainless steel is not less than 12% , even up to 18% . When chromium and other elements are added to stainless steel, the properties of the steel can be changed, and a dense oxide protective film can be formed on the surface of the steel, thus greatly improve the stainless steel butterfly valve corrosion resistance.