Plastic pall ring Diameter: 16, 25, 38, 50, 76mm PP, PE, PVDF, PVC, RPVC, RPP ... 2" (50mm); 3" (76mm).Technical data of Plastic pall ring: Diameter (mm)Dimension d×h×δ (mm)Specific surface area (m2/m3 ... 1 )Heaping number (n/m3)Heaping weight (kg/m3)Φ1616×16×11880.91275112000141Φ2525×25×1.21750.902395350091Φ3838×38×1 ... Φ7676×76×2.6730.9294193060 Plastic polypropylene pall ring (16, 25, 50, 76mm)