| 摘要 |
A device which is connected to a flange that connects a second pipe to a first pipe for preventing separation of the second pipe, a clamp according to the present invention comprises a clamping body portion in which at least one pressing portion, which is provided on the inner circumferential surface of the clamp so as to protrude in a shape having a lower surface edge of one of a cone, a truncated cone, a polyangular pyramid, and a truncated polyangular pyramid, for pressing the outer circumferential surface of the second pipe, wherein on the pressing portion an apex of a cone or pyramid is arranged toward a separating direction of the second pipe and a lower surface of the cone or pyramid is arranged toward an insertion direction of the second pipe, so that movement in the insertion direction is easy and movement in the separating direction is difficult. According to the present invention, structural stability in a pipe joint can be enhanced by minimizing sliding regardless of the grade of steel. |
