| 摘要 |
The present invention relates to a clamp for checking a coupling state of pipe connection by a naked eye. The present invention comprises: a ring-shaped flexible band having an end part of one side facing the end part of the other side and having a locking piece formed in an upper portion of the end part of the other side; an upper extension unit having a predetermined distance from the end part of the one side and extended in a longitudinal direction of the end part of the one side; a lower extension unit having the predetermined distance from the end part of the other side and extended in the longitudinal direction of the end part of the other side and where a locking groove is formed in the lower portion of the end part of one side to be slid between the end part of the one side and the extension unit; and a display unit protruding from a side surface of the flexible band. |
