Corrosion resistance of stainless steel depends on chromium tee, but because chromium is an integral part of the steel, so protection methods vary. In addition of chromium to 10.5%, the stainless steel equal tee atmospheric corrosion resistance significantly increased, but higher chromium content, although still improve corrosion resistance, but not obvious. The reason is of steel with a chromium alloying treatment, the change in the type of surface oxide became similar to pure chromium metal oxide formed on the surface. This tight adhesion of chromium-rich oxide protective surface to prevent further oxidation. The thin oxide layer, through which you can see the surface of the stainless steel equal tee natural luster, making stainless steel equal tee has a unique surface. Moreover, if the surface is damaged, the exposed steel surface and atmospheric reactions will self repair, re-formation of this oxide "passive film" and continue to play a protective role. Our company specializes in the production and sale of three, four varieties reliable quality and safety, please come to order. Contact: Liu Mobile: 13931700327 Tel :0317-6017386 QQ number -1286123911 Fax 0317 -5138086