Operating parameters: 　　capacity: Q = 6.3 ~ 450m3 / h, head:H = 75 ~ 603 m, 　　Diameter: 40 ~ 250mm, temperature:0 ~105 degree celsius. Product Overview: 　　(1) D-type pumps are single suction multistage centrifugal pump for water and some liquid which physical and chemical properties are similar to water. It can also pump other corrosive liquid if the material of impeller ,sealing ring and axis are changed. The liquid temperature must be less than 105 degree celsius. 　　(2) MD-type pump is antiwear multistage centrifugal pump. It has the advantage of energy-efficient and antiwear. It is wildly used water which solid particle content is less than 1.5% (particle diameter less than 0.5mm) and other similar liquid. The liquid temperature must be less than 105 degree celsius. Product useage: 　　D, MD-type multi-stage centrifugal pumps is suitable for mine drainage, factories and urban water supply.