On the basis of model IH pump series,model FIJ、IJT cantilever-type single-stage-single-suction centrifugal chemical pump is a new product which is designed with overseas updated technologies for reference.Its rated perfrmance and installat-ion dimension are up to ISO2858 standards, while its production technology is in accordance with ISO5199 standards.The pump is mainly used in converying slurry containing less than 50% solid granules in chemical process. Compared with model IH pump,model FIJ chemical pump has the following features in structure. 1.Shortened cantilever of the blade wheel,and increased diameter of the shaft: 2.Spiral case of unsymmetrical section,pump casing without mouth ring: 3.Three imported bearings are used. 4.A new seal, which is similar to overseas advanced double-end mechanical seal or filling seal,is installed. Because of the above structure characters,the pump has the following advantages. 1.When used in conveying media with high viscosity or containing solid granules, the pump has higher efficiency, compared with model IH pump. 2.The spiral case with unsymmetrical section may lower the shock loss of liquid and shorten the size of pump casing. 3.Because of increased strength of shaft and lowered diflection of rotor,the pump can operate smoothly and the seal have a long life. 4.Because the blade wheel and its nuts are integrated, it can improve the feeding condition of the pump and strengthen the cavitation - proof performance of the pump. 5.With advanced seal form, it is ensured that the pump has better seal effect and less leakage. 6.The gap of the pump can be adjusted without disassembling pump casing and blade wheel,Thiscan lower the maintenance time and save the maintenance cost.