Method for extending length of vertical pipe for structure using pipe, and vertical pipe

Abstract

According to the present invention, extension pipes are respectively inserted on both sides of a connecting pipe provided with a connecting member in a middle portion along the length, and then fixed to the connecting pipe by means of a caulking process, and thus not only can the extension pipes be easily connected by a compression method to construct piping of a desired length, but the connecting pipe can also be assembled accurately and quickly at a set position. In particular, according to the present invention, the connecting pipe and the extension pipes have hexagonal widthwise cross-sections, and thus piping can be extended to a desired length by easily inserting the extension pipes in a set direction and quickly and accurately performing caulking work. In addition, according to the present invention, pins are inserted so as to pass through overlapping portions of the connecting pipe and the extension pipes and then fixed by an upset forging process, and thus the pipes can be used more safely due to the increased rigidity at connection portions.

Images