Ordinary steel in sodium chloride solution and sea water, salt water corrosion rate is not too high, are generally required to use paint protection, all kinds of stainless steel also has a very low corrosion rate, but may be localized corrosion caused by chloride ion damage on the surface of the oxide film, such as in the stainless steel is the addition of molybdenum can improve its stability in seawater, so must choose high strength metal pump usually choose 316 stainless steel better. Plastic polymer due to its good chemical stability and resistance to oxidation is widely used in strong corrosion process, reinforced polypropylene, engineering plastics, polyethylene is the price is relatively cheap material, plastic Wang said the PTFE in modern chemical enterprises are widely accepted, its strength and resistance to temperature can be used to replace the metal pump, my company production of the FPZ corrosion self suction pump, SFBX Type 316L stainless steel self-priming pump is widely used in the transportation of salt water equipment.
