Classification of chemical pumps

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I. Based on the different materials used in chemical pumps, their application areas can be classified as follows: 1) Chemical pumps (made of stainless steel) are widely used in industries such as petroleum, chemicals, metallurgy, synthetic fibers, pharmaceuticals, and food processing, for transporting alkaline and corrosive substances； 　　2) Chemical pumps (made of fluoroplastic) are used to transport any acidic, alkaline, or corrosive media ； 　　3) Chemical pumps (made of cast iron) are used in industry, urban water supply and drainage systems, as well as for irrigation and drainage in agricultural fields and orchards; they are used to transport clean water or other liquids with physical and chemical properties similar to those of clean water. II. A detailed classification of chemical process pumps based on their different applications: 1) Process flow pumps: including feed pumps, return pumps, circulation pumps, flushing pumps, sewage pumps, make-up pumps, discharge pumps, etc. 　　2) Utility pumps: including pumps for boilers, cooling tower pumps, fire pumps, and deep well pumps for water supply. 　　3) Auxiliary pumps: including lubricating oil pumps, seal oil pumps, pumps for hydraulic transmission, etc. 　　4) Pipeline transfer pumps: pumps for oil pipelines, pumps for loading and unloading vehicles, etc.