D-type horizontal multi-stage centrifugal pump is a single-suction multi-stage segmented centrifugal pump, which is used to transport clean water or other liquids with physical and chemical properties similar to water. The temperature of the liquid should not exceed 80 °C. It has the characteristics of high efficiency, wide performance range, safe and stable operation, low noise, long life, convenient installation and maintenance, etc. It can also be used to transport hot water, oil, corrosive or abrasive media by changing the material of the pump flow parts, the sealing form and increasing the cooling system.