| 摘要 |
<p>PURPOSE:To reduce manufacturing processes and greatly improve economy, by forming hand holes on either or both of a casing and vertical sheel plating of stay ring for facilitating welding. CONSTITUTION:Hand holes 52, 54 are formed on either or both of a casing 20 and vertical sheel plating 30 of stay ring, so that welding of the casing 20 to upper and lower plates 24, 26 of the stay ring is surely facilitated through the holes 54, 52. This makes is possible to manufacture the stay ring 22 and casing 20 independently and then assemble them for welding on the site, which contributes to reduce the manufacturing processes and improve economy greatly.</p> |
