CLH series vertical seawater pump series is a new type of centrifugal pump, which is self calculated according to CB/T3523-93 marine vertical seawater pump and relevant ISO international standards. It is divided into two series. It can be used as ballast pump, bilge pump, cooling pump, drainage pump and fire pump for all difficult ships. It can also be used as supporting water supply pump for seawater desalination crack and various water tank devices, as well as booster pump for petrochemical pipeline, cold and hot water circulation system and domestic water of high-rise buildings.