| 摘要 |
<p>The pouring tube comprises a tubular structure (1, 6) formed from refractory, heat-insulating material encased by a sheet metal casing (2, 7). The metal casing (2, 7) is protected from attack by molten metal and/or accompanying slag by a protective sleeve (4, 9). The sleeve (4, 9) and the casing (2, 7) are located in a spaced apart relationship over at least a part of the length of the sleeve to allow for expansion of the tube without fracture of the sleeve.</p> |
