The Catalyst Bed Support Medias are very good support media for catalyst beds and other chemical units. They are in the same quality and performances as those America/European products. Now, we have 3 main types: 17%, 23%, 99% etc. (1) Ceramic Support Media Balls (Spheres) for Catalyst Bed or other units (17%) - Al2O3 + SiO2 = 92% min. (2) Ceramic Support Media Balls (Spheres) for Catalyst Bed or other units (23%) - Al2O3 + SiO2 = 95% min. (3) Ceramic Support Media Balls (Spheres) for Catalyst Bed or other units (99%) - Al2O3: 99.3% min. Features: 1) Spheres (balls) 2) Type: 17%, 23%, 99% 3) Very excellent support and covering media 4) Function as support media for catalyst beds or other chemical beds in reactors or towers 5) Widely used in oil refinery, petrochemical industry, gas industry, and environmental protection 6) Very excellent performances and stability in acid and other chemical surroundings. 7) Very good chemical stability and low rate of water absorption 8) Can withstand high pressure and high temperatures 9) 99% can be even used in hot caustic service because they can resist over 10% sodium hydroxide service up to 60 deg.C, and 1% sodium hydroxide service temperature up to 100 C 10) Can also resist the chemical corrosions of any acid (including organic and inorganic acids, but except HF acid), most of alkali and organic solvent 11) Will well protect the catalyst and avoid poisoned 12) All of our balls will have shock test, attrition test, impact tast, quench test, etc. inspection. Package: 25kg per bag, 1MT (1 cbm) / bulk bag, or new steel drums with inside lining. Size available: 3mm (1/8"), 6mm (1/4"), 10mm (3/8"), 14mm (1/2"), 16mm (5/8"), 19mm(3/4"), 25mm(1"), 38mm(1-1/2"), 50mm(2").