EAF Roof Refractory Corundum Castable Chemical Bonded

Commodity: hab-22 (a+b) chemical-bonded super castables for casting delta roof high refractoriness; high strength; high porperty for corrosion and abrasion resistance. Specifications: al2o3 : 74-76%(fused), sio2: 12-15%, fe2o3: 1.5% max, cao 4-6% cold crushing strength at 1100℃: 160mpa max: operating temp=1750℃ grain size : 0-5 mm water required: 4-5% bulk density at 110℃x24h: 2850kgm3 shelf life: 9 months from the production date in dry condition packing: net weight 50kg per units (plastic woven bag); 1 metric ton in p.p big bag with sling.