Our company is Topchase Metallurgy Refractories Co.,Ltd. The main products are refractories and alloy metals. One of the most important refractories is the Tundish Well Block. The product is made by close ingredients, high-pressure molding, unburned low-temperature drying, with heat-shock resistance and high strength corrosion resistance. Raw Material: Alumina-magnesite carbon Ladle Well Block Al2O3 MgO Cr2O3 Apparentporosity Bulk density C.C.S (% minm) (% minm) (% minm) (% max) (gm./cc minm) (MPa minm) 75 5 2.4 17 2.90 80 85 4 2.4 16 2.95 100 90 4 2.4 15 3.05 100 94 3 2.4 15 3.1 100