FSB-L fluorine alloy centrifugal pump suitable for chlor-alkali, chlorobenzene, foil formation, pickling, pesticides, medicine and other industries of highly corrosive media transport. FSB(L) centrifugal pumps, the flow parts are all made of fluorine plastic alloy, compact structure, simple operation, low price. The two types of pump shell, impeller, mechanical seal, etc. can be used interchangeably, and are welcomed by the pesticide.