| 摘要 |
<p>An object of the present invention is to provide a flange coupling in which the height of a horizontal portion of an L-shaped pipe is made as small as possible. The present invention provides a flange coupling having a flange formed with an attaching bolt hole and a pipe connection hole and an L-shaped pipe installed in the pipe connection hole, wherein the L-shaped pipe is made of aluminum or aluminum alloy, and a horizontal portion of the L-shaped pipe is molded so that a lower face thereof is at the same level as or at the level close to a plane including the upper surface of the flange. <IMAGE></p> |
