Abstract: A self propelled vehicle (14) has rollers (20, 22) supporting the vehicle for movement. A ring (44) is mounted for rotation and has rolls (54) of wrapping material (55) thereon for wrapping the pipeline (10). A plurality of discharge nozzles (82) spaced about the pipeline (10) forwardly of the rolls (54) of wrapping material (55) spray a liquid coating material in streams (86) impacting adjacent wrapped and unwrapped portions of the pipeline 10 as shown in FIG. 9. The wrapping material (55) is porous and the coating material permeates and saturates the wrapping material from both the inner and outer surfaces of the wrapping material (55). Fabric-type wipers (81) rearwardly of the rolls (54) of wrapping material (55) smooth and even the outer surface of the wrapping material and upon curing of the coating material, such as an epoxy resin, a hard outer protective liner or covering is formed including the wrapping material.A separate embodiment in FIGS.

Abstract: A carriage (28-28B) has rollers (58-58B) supported on the outer surface of a pipeline (10) for movement therealong in the cleaning operation for the pipeline. A nozzle assembly (86-86B) is mounted for oscillating movement relative to a supporting frame in a direction concentric to the outer peripheral surface (58) of the pipeline (10) with fluid discharge nozzles (104-104B) mounted on the nozzle assembly for discharge of pressurized fluid against the surface of the pipeline (10). In one embodiment (FIGS. 2-7) an enclosed cylindrical nozzle assembly (68) has rollers (96) thereon mounted on an outer fixed cylindrical housing for oscillating movement. In other embodiments (FIGS. 8-10 and FIGS. 11-12) fixed U-shaped yokes (61A, 61B) are positioned alongside pipeline (10) and support the nozzle assembly (68A, 68B) for oscillation.