1 stainless steel pall ring packing 2.large flux, less resistance, 3. ... same material, the same specifications of pall ring packing, compared with rasching ring , not only hasBigger ... medium is 60-150 degrees Celsius, widely used in packing tower of petroleum, chemical, alkali, gas, environment ... .92197242Note :ordering to be defined required packing specification, high-quality stainless steel packing