Various bulk packing: Raschig ring, spiral ring, cross clapboard ring , pall ring, ... ≤0.5 ≥98 ≥150Stoneware≥4.4≤3 ≥92≥300Various bulk packing: Raschig ring, spiral ring, cross clapboard ring , pall ring, ... ring, cascade ring, torus ring , keel ring , conjugation ring. Ceramic corrugated packing surface area: 125/250/350/400/450 m2/m3 void ... /500/550 kg/m3 compressive strength: ≥2.0 Mpa ceramic packings