Load collapse prevention tool of the circular tube

摘要

The present invention mounted and to the yen tube, remove is an easy, also, without damaging the end face and the inner surface of the circular tube, I provide a load collapse prevention tool of the inner tube with a strength that repeated use can be. A yen tube load collapse prevention instrument 3 of, and the arm piece 4a to be inserted into one of the circular tube, which is annexed to the left and right, the connecting piece 4b to flex break from the proximal end portion of the arm piece 4a in a perpendicular direction The more from the one L-shaped member 4 is made, the arm piece 5a to be inserted into a circular pipe which is adjacent to one of the circular tube, the connecting piece 5b which flex break from the proximal end portion of the arm piece 5a at right angles and the other L-shaped member 5 made, as the one of the arm piece 4a and the other arm piece 5a above spaced a desired distance, to fix the one connecting piece 4b and the other connecting piece 5b of the fixed and characterized by comprising further a means 6. .BACKGROUND