Abstract: An apparatus for and a method of nesting pipes of varying diameters or unnesting the resulting assembly into individual pipes for efficient transport of the pipes. The apparatus comprises a support arm for supporting a pipe with the arm extending therethrough, a support member for supporting the pipe thereon, a lift for raising or lowering one of the support arm and the support member, e.g. the support member, and a carriage movable axially of the pipe and equipped with the above-mentioned one support element, e.g. the liftable support member. By the movement of the carriage, a pipe on one of the support arm and support member is fitted around the other or around another pipe thereon, or nested pipes are separated. In the above-mentioned example, a pipe on the support member is fitted around the support arm or another pipe thereon.

Abstract: A device for holding nested pipes to one another radially and axially thereof each at one end, comprising a substantially U-shaped hook member engageable with axially opposite side faces of an inner flange on one end of an outer pipe and also engageable at its bottom with an outer peripheral shoulder portion of one end of an inner pipe, an engaging member engageable with one end face of the inner pipe, and screw means for fastening these two members to each other. Like the hook member, the engaging member is preferably U-shaped. For holding at least three pipes together, an engaging member substantially resembling the hook member is used for the intermediate pipe.