Taphole Mrx is a functional refractory material that used for the blast furnace. 高炉出铁口用炮泥是功能性耐火材料。
The steel cylindrical casings using fire proof material,also heat insulating material interiorly, which forms fire-proof structure. 钢板制成的圆筒外壳中使用了耐火材料，内部也贴有绝热材料，形成耐火结构。
