中间包镁质、镁钙质喷涂（涂抹）料，以优质镁砂为原料，经科学合理的粒度级配，添加各种结合剂混炼而成，具有耐高温、耐侵蚀等特点，可保证多炉连浇。且包体易拆解、拆除方便。
    Magnesium and MgO-Ca base spraying(coating)mixture for tundish is made of high-quality magnesiteand refined by adding various binding agents with scientific and reasonable granularity distribution.lt hasthe characteristics of high temperature resistant,corrosion resistant etc,lt can realize back to back castingand easy to disjoint the ladles with good effect in use.