Causes of rusty stainless steel submersible pumps

Stainless steel pump rust is due to surface film damage, more common in daily life are the following:
    1, the surface of stainless steel deposits containing other metal elements of dust or dissimilar metal particles attached to the material in the humid air, the attachment of the condensate between the stainless steel, the two together into a micro-cell, triggering electrochemical reaction , The protective film is damaged, called electrochemical corrosion.
    2, stainless steel surface adhesion organic juice (such as vegetables, noodles, sputum, etc.), in the case of water oxygen, constitute organic acids, organic acids for a long time on the metal surface corrosion.
    3, stainless steel surface adhesion containing acid, alkali, salt substances (such as decoration of the wall of alkaline water, lime water splash), causing local corrosion.
    4, in a polluted air (such as containing large amounts of sulfide, carbon dioxide, nitrogen oxide atmosphere), the case of condensate, the formation of sulfuric acid, nitric acid, acetic acid liquid point, causing chemical corrosion.
The above can cause damage to the surface of the stainless steel protective film caused by corrosion.
So, to ensure that the metal surface is permanently bright and not corroded, we recommend:
    1, must always be on the decorative stainless steel surface cleaning and scrubbing, removal of attachments, eliminating the external factors lead to modification.
    2, the beach area to use 316 stainless steel, 316 material can resist seawater corrosion.
    3, the market some of the chemical composition of stainless steel pipe can not meet the corresponding national standards, less than 304 material requirements. So it will cause rust, which requires users to seriously choose a reputable manufacturers of products