Abstract: A curl-forming apparatus (1) includes: a main body (20) configured to deform a profile strip (100); and a support body (3) configured to support the main body (20) in a holding unit (4) for the profile strip (100). The profile strip (100) is helically wound on an inside of the holding unit (4). The main body (20) is disposed in a hollow part of the holding unit (4) and is configured to draw and deform the profile strip (100) inside the holding unit (4). The support body (3) is rotatable relative to the holding unit (4), and is configured to rotate about an axis of the holding unit (4) in synchronization with the main body (20) that draws the profile strip (100).

Abstract: A curl-forming apparatus (1) includes: a main body (20) configured to deform a profile strip (100); and a support body (3) configured to support the main body (20) in a holding unit (4) for the profile strip (100). The profile strip (100) is helically wound on an inside of the holding unit (4). The main body (20) is disposed in a hollow part of the holding unit (4) and is configured to draw and deform the profile strip (100) inside the holding unit (4). The support body (3) is rotatabe relative to the holding unit (4), and is configured to rotate about an axis of the holding unit (4) in synchronization with the main body (20) that draws the profile strip (100).

Abstract: Slurry A is kneaded at ground level to produce a high-flow low-viscosity mortar, whereupon the kneaded Slurry A is pressure fed by a Slurry A pump via a Slurry A hose to a fixed volume dispensing section. Simultaneously, kneaded Slurry B is pressure fed by a Slurry B pump via a Slurry B hose to a kneading section. Slurry A supplied to the fixed volume dispensing section is then more uniformly kneaded there and, by adding Slurry B, i.e. the additive, in the subsequent kneading section and kneading Slurry A with Slurry B in a fixed proportion, a high-viscosity mortar is produced, with said high-viscosity mortar injected into a space between an existing pipeline and a spiral wound pipe through an injection nozzle of a supply hose.