... woun by long fiber which is made up of PP material. PP Melt spun filter cartridge is a columniform ... by long fiber which is made up of PP material.FeaturesHigh precision filtration, large flux,symmetrical structureLarge ... of boiler waterThe filtration of industrial oilMain performaceFilter ratings:1.0μm,3.0μm,5.0μm,10 ... μm,20μm,30μm,50μmDiameter of filtrating core:65mmLength of filtering core:10in ...