| 摘要 |
PROBLEM TO BE SOLVED: To provide a lance pipe with which the crack in a fixed-shape refractory can be restrained while securing the erosion resistance. SOLUTION: The lance pipe 1 is provided with a bar-like core metal 2 having a hole as a supplying passage 4 and a refractory 3 covering the outer peripheral surface of the core metal 2. The refractory 3 is provided with the plurality of fixed-shape refractories 5 disposed at interval in the peripheral direction of the core metal 2 at the outer peripheral side of the core metal 2 and castable layers 6 filled up into the gaps in each of the fixed-shape refractories 5. COPYRIGHT: (C)2006,JPO&NCIPI
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