... ,oil liquid filter bag1 filter bagFeatures:liquid filter bag can filter normal atmospheric temperature or high-temperature ... with acid and alkali,oil ,water.2 filter bag Material: polyester needle felt,polypropylene needle felt,nylon ... monofilament mesh,etc.3 filter bag ability( micron):1,5,10,50,70...4 ... filter bag Consruction;weldedor sewn5 collar tyoes: zinc ring ...