embodiment of the invention as shown to advantage in fig1 and 2 of the drawings pipeline 1 includes a single flange 3 identified specifically as 3a in fig2 vertically projecting from the outer surface of the pipeline radial to the longitudinal axis of the pipeline section to which it is affixed the flange extends along the pipeline for its entire length the pipeline may be made of any suitable material and be of any suitable diameter it only being necessary that the strength of the pipeline be sufficient to support the carriages under load conventional cylindrical steel pipe is contemplated for the carrying of water oil slurry or the like flange 3 of the first preferred embodiment consists of a roller chain 3a engaged by drive means designated generally by the numeral 65 including horizontally disposed drive sprockets 64 and 66 operable to engage and mesh with the roller chain also shown to advantage in fig8 while flange 3 is preferably in the form of a roller chain it is also contemplated that the flange may be constructed of a rail 3b provided with opposing planar surfaces and engaged by compression rollers for drive as shown in fig7 or a rail 3d in the form of a rack engaged by a drive pinion as shown in fig9 or include a roller chain affixed to a rail the chain being engaged by a drive sprocket in a manner used elsewhere in the invention as will hereinafter be explained pipeline support means preferably in the form of pedestals 7 support the pipeline at various heights above ground level depending upon the pipeline grade and the topography of the area involved as shown in fig5 pedestal 7 is connected to pipeline 1 by means of a holding bracket.