IHF centrifugal pumps in accordance with international standards of design, pump body with metal shell lined with poly FEP (F46); pump cover, impeller and shaft are made of metal block outsourcing of fluorine plastics integrally sintering molding, seal with external loading type corrugated pipe mechanical seal; selected static ring 99.9% (alumina or silicon carbide); ring with PTFE filler material. The characteristic is that the corrosion resistant and wear resistant sealing performance is superior and reliable. The pumps are suitable for delivery of any concentration of sulfuric acid, hydrochloric acid, acetic acid, hydrofluoric acid, nitric acid, aqua regia, alkali, strong oxidizing agents, organic solvents, reducing agents and other harsh conditions strong corrosive medium, is at present in the world the latest resistance one of equipment corrosion, its biggest advantage is advanced and reasonable structure, strong corrosion resistance, reliable sealing performance, stable work, low noise, long service life, the transmission medium temperature - 85 degrees less than or equal to 200 degrees