Lining hose for renovating fluid-bearing pipe systems with at least one curable layer, wherein this at least one curable layer comprises at least on resin-impregnated fiber belt (fiber ribbon) and a first outer tubular foil, which is arranged on the curable layer on the surface opposite to the surface facing the fluid medium transported and which first outer tubular foil is equipped with a reinforcing element on both surfaces of the tubular foil and which is impregnated with resin on both surfaces.

Systems and methods for forming and deploying a pipe liner in a pipe main having a service lateral. The line is formed from three pieces of material. The piece of material forming the front top and of the main liner and the front of the lateral line has a cutout at the joint to reduce bunching, which can result in non-uniform liner thickness and may form obstructions at the joint.

A system and method for pipe insertion in live gas mains includes isolating a section of the gas main and taking measurements of service line connection points. This data is then used to prepare a pipe to be inserted into the gas main by drilling holes and applying fittings at the appropriate locations. The prepared pipe is then inserted into the gas main and the service lines are connected to it without the need to excavate the street over each service connection. The inserted pipe is then fluidly connected to the cut ends of the gas main and gas flow is routed through the newly inserted pipe and the attached service lines, while gas continues to flow through the original portions of the gas main that still remain in service.

A method lays lined pipeline which actively and successfully removes air pockets which night be trapped in the annulus between the liner and the host pipe by progressively flooding the lined pipeline. Further, the liner is brought into closer contact and engagement with the host pipe. The removal of air in the annulus enables the pipeline test pressure to stabilize more quickly and avoids the risk of potential collapse during operational service life in the event the pipeline pressures fluctuate or a vacuum is created during an emergency shutdown.

A pipe liner for lining a fluid-carrying pipe, the pipe liner comprising an elongated flexible conduit and a flexible flange. The flexible conduit includes an outer wall forming an open-ended central channel for allowing fluids to be pumped therethrough. The flexible flange extends radially from one end of the elongated conduit and includes a number of fastener holes. The flexible conduit and the flexible flange are configured to be collapsed and pulled through the pipe such that the flexible flange can be connected to a rigid flange of the pipe via the fastener holes. The pipe liner is less prone to leak and is easier to transport and install.

A pipe pulling head is provided, including first and pulling portions and a screwing portion. The engaging portion has a front end, a rear end, and an outer surface and configured for engaging and holds a first external pipe from inside of the first external pipe. The screwing portion has a front end, a rear end, and an outer surface and disposed at the front end of the engaging portion and extends coaxially and configured to be engaged and pulled by a tool such as wrench or winch. The pulling portion is provided in a central hole provided through the engaging portion and the screwing portion. The pipe pulling head is configured to be installed in the first external pipe and pulled through a second external pipe having a diameter larger than the first external pipe by the screwing portion.

A method of installing an exhaust tube is implemented by inserting an exhaust tube into an exhaust pipe that leads from the inside of a building to the outside thereof. Utilizing an already-placed exhaust pipe, a new exhaust tube is inserted into this exhaust pipe. The exhaust tube is installed according to a procedure of: performing, on the inside of the building, an operation of inserting a new exhaust tube into the already-placed exhaust pipe; performing, on the outside of the building, an operation of fixing the inserted exhaust tube to the exhaust pipe; and performing, on the inside of the building, an operation of connecting the fixed exhaust tube to an exhaust vent of a combustion apparatus.

Described herein is a tubular apparatus for making rigid tubular structures, comprising a flexible cylindrical wall (11, 11) defining inside it a hollow passage (19), and suited for being wound, in particular on a spool, and continuously laid for use. According to the invention, said cylindrical wall (11, 11) comprises a fabric (12, 13, 15, 12, 13, 15) comprising inside it at least one gap (14;14), which develops in the axial direction of said cylindrical wall (11, 11), said fabric (12, 13, 15; 12, 13, 15) comprising means suitable for operating under traction (15, 15) when present within said at least one gap (14; 14) is a fluid (20), injected under pressure for stiffening the tubular apparatus (10; 10).

A system and method for pipe insertion in live gas mains includes isolating a section of the gas main and taking measurements of service line connection points. This data is then used to prepare a pipe to be inserted into the gas main by drilling holes and applying fittings at the appropriate locations. The prepared pipe is then inserted into the gas main and the service lines are connected to it without the need to excavate the street over each service connection. The inserted pipe is then fluidly connected to the cut ends of the gas main and gas flow is routed through the newly inserted pipe and the attached service lines, while gas continues to flow through the original portions of the gas main that still remain in service.

A system and method for pipe insertion in live gas mains includes isolating a section of the gas main and taking measurements of service line connection points. This data is then used to prepare a pipe to be inserted into the gas main by drilling holes and applying fittings at the appropriate locations. The prepared pipe is then inserted into the gas main and the service lines are connected to it without the need to excavate the street over each service connection. The inserted pipe is then fluidly connected to the cut ends of the gas main and gas flow is routed through the newly inserted pipe and the attached service lines, while gas continues to flow through the original portions of the gas main that still remain in service.