| 摘要 |
<p>PURPOSE: To manufacture an underground buried pipe used for burying an optical fiber, a telephone line, etc., for a communication information network under the ground in solid constitution, which is lightweight and is handled easily and is not crushed under ground pressure. CONSTITUTION: A large number of underground buried pipes 1 are buried while each section of the buried pipes in specified length is connected mutually in a freely fitting manner. The underground buried pipe 1 consists of an article, in which a plurality of synthetic resin pipings 2 are arrayed mutually in parallel, the outsides of the pipings 2 are surrounded by a rectangular outer frame body 3 and these pipings 2 and outer frame body 3 are unified. The both ends of each of the underground buried pipes 1 cut in specified length are formed in a shape that both ends are fitted mutually, and these cut buried pipes 1 are connected mutually, thus forming a continuous underground buried pipe.</p> |
