| 摘要 |
<p>PURPOSE:To enable a joint to be used for arranging a pipe with dispersion in its outside diameter by forming the joint into a structure with an internal surface side of the joint having in a step-state an internal diameter of two kinds or more or continuously decreasing the internal diameter toward the center part from both ends of the joint. CONSTITUTION:A shape memory alloy-made pipe joint 1 connects a pipe utilizing shape restoring distortion by heating, and the pipe joint 1 forms its internal surface side having in a step-state an internal diameter or two kinds or more in a manner wherein the pipe can be inserted selecting a proper internal diameter part in accordance with an outside diameter of the pipes 3, 4 in use. While similar pipe joint 2 forms a structure such that its internal surface side decreases an internal diameter continuously toward the center part from both ends of the joint.</p> |
