ALDF Type SS Vertical Multistage Centrifugal Pump is multistage pump 1.ALDF Type Stainless Steel Multistage Centrifugal Pump is a kind of multistage pump composed of ... stainless steel casing, impeller, shaft, etc.2.ALDG Type Vertical Multistage Pump is made of stainless steel casing and cast ironimpeller ...