... endurable 3.fast delivery 4.competitive price and High quality Refractory Ball1.>Passed ISO9001: 2000 Certification. 2.>Now the largest ... dope, textiles, paints, printing and dyeing4, Ceramics: Electronic ceramics, refractory ceramics, structural ceramicsrefractory ball is manufactured by using industrial alumina ... /piece400-15000Loading refractoriness°C≥1450Porosity%≤21Reburning%≤0.5 refractory ball