| 摘要 |
<p>PURPOSE: A pipe coupling device is provided to prevent the head of a bolt from being exposed outside and to improve appearance thereof. CONSTITUTION: A pipe coupling device comprises: a first pipe(10) which is equipped with a bolt hole in one side thereof and a head hole in the other side thereof; a second pipe(20) which is combined with the first pipe and is formed of a female screw groove in one end; a cylindrical fastener(40) which is equipped with a nut coupled with a fastening bolt through a nut hole; and a fastening bolt(30) which combining the first and second pipes.</p> |
