Pall Ring

Carbon Steel and Stainless Steel Pall Rings Characteristics Sizes/mm Bulk Density(kg/M3) Number per M3 Surface Area(M2/M3) Free Volume(%) 15*15* 0.3 385 240 000 360 94 25*25*0.3 231 51 000 215 96 38*38*0.4 207 14 500 135 96 50*50*0.5 200 6 300 105 96 80*80*0.8 200 1 600 80 96 Weight differs with different materials and thickness. We are able to supply Pall Rings with higher thickness say 1.0mm for 25mm Diameter.

Plastic materials for the production of packings for towers have recently been used in many application fields in which formerly were restricted to metals and ceramic materials. 

Selection of plastic materials depends on chemical resistance, temperature stability and mechanical strength. Polypropylene has good resistance to chemicals at temperatures up to more than 100 deg.C, polypropylene is superior to polyethylene in most fields.

The basic property of Polypropylene PP - Density: 920kg/m³ 

Types used: Operational temperature range:

Polypropylene LTHA: up to +110 deg.C

Polypropylene glass-fiber reinforced: up to + 140 deg.C

Polypropylene alkali-proof: up to +110 deg.C

Cold-resistant : to -10 deg.C (depending on the type)

Resistant to acids like hydrochloric acid and sulfuric acid bases like caustic soda solution and causti- potash solution salt solutions like sodium chloride, ammonium chloride alcohols, ketones such as methanol, ethanol, acetone-organic acids like formic acid, acetic acid

No resistant to: strong oxidizing agents such as halogens like fluorine, chlorine, bromine halogenated hydrocarbons aromatic hydrocarbons

As to the resistance, the respective concentrations and temperatures are to be observed.

Plastic Pall-Ring