A method of applying protective sheeting of polymer material to a pipeline, the method including the steps of advancing a carriage along an annular path extending about the longitudinal axis of the pipeline; extruding the protective sheeting on the carriage; winding the protective sheeting, as the protective sheeting is extruded, about a cutback on the pipeline; and plastifying the polymer material on board the carriage.

A method for protecting underground pipes by applying three layers of different materials to an outer surface of a pipe is accomplished by wrapping three layers of different materials on the pipe outer surface. The three layers are: The first layer: which surrounds the pipe, is the insulating tape known as cold wrap tape. The second layer: which follows the first layer, made from non-woven synthetic wool, and called the protector. The third layer: the fixing tape made of synthetic fabric that contains fine hooks that can grip tight the second layerthe protectorand prevent it from delamination and falling. Second and third layers act together as Velcro to securely fix and protect the first layer (cold roll tape) from the mechanical damage of soil and tamping over the pipe and UV during the of installation period and before backfilling.

The invention relates to an anti-corrosion system comprising an at least one-layered first tape, comprising at least one elastomer selected from the group comprising (block-) co- and/or terpolymers with at least one carbon-carbon double bond, as well as at least one cross-linking agent, selected from the group comprising at least one reactive resin, wherein the anti-corrosion system furthermore comprises at least one primer, comprising at least one catalyzing agent to activate the cross-linking agent.

Embodiments herein are directed to an anti-corrosion tape comprising at least four plies. At least two plies of the anti-corrosion tape, in the form of carrier plies, include an at least single-layer carrier, and at least one layer of the carrier is designed as a carrier layer. At least one other ply of the anti-corrosion tape is designed in the form of a connection ply and includes at least one connection layer, wherein the connection layer includes a material selected from a group consisting of at least one butyl rubber and/or at least one polyisobutene, and the at least one connection ply is arranged between the two carrier plies. At least one other ply of the anti-corrosion tape is designed as an anti-corrosion ply and is arranged on at least one exposed surface of at least one support ply.

This disclosure relates generally to corrugated pipe, and more particularly to corrugated pipe with an outer wrap. In one embodiment, a pipe includes an axially extended bore defined by a corrugated outer wall having axially adjacent, outwardly-extending corrugation crests, separated by corrugation valleys. The pipe also includes an outer wrap applied to the outer wall. The outer wrap may include fibers and plastic. The outer wrap may span the corrugation crests producing a smooth outer surface.

A system and method for protecting metal and concrete structures from bacteria-induced corrosion, wherein the method includes creating a viscoelastic, self-healing wrapping material configured to encapsulate a metal structure or a concrete structure by combining a thermoplastic blend, at least one filler, at least one paraffinic oil, and at least one biocide formulated to be effective against aerobic and anaerobic bacteria, wherein the anaerobic bacteria includes sulfate-reducing bacteria; wrapping an exterior surface of a metal structure or a concrete structure with the viscoelastic, self-healing wrapping material; and placing the wrapped metal structure or concrete structure in an operational environment, wherein the viscoelastic, self-healing wrapping material is operative to prevent or greatly reduce corrosion of the metal structure or concrete structure caused by aerobic and anaerobic bacteria occurring or located in the operational environment.

This disclosure relates generally to corrugated pipe, and more particularly to corrugated pipe with an outer wrap. In one embodiment, a pipe includes an axially extended bore defined by a corrugated outer wall having axially adjacent, outwardly-extending corrugation crests, separated by corrugation valleys. The pipe also includes an outer wrap applied to the outer wall. The outer wrap may include fibers and plastic. The outer wrap may span the corrugation crests producing a smooth outer surface.

An apparatus for providing an interstitial space to the surface of wall, the apparatus comprises: an adhesive layer; a layer of fluid impervious and weather proof material in form of a tape, the tape partially overlapping itself; a layer of spacer material situated between the surface of the tape facing the wall and the surface of the adhesive layer distal from the wall. The spacer material has ends which are encapsulated, the apparatus providing a sealed interstitial space.

A film is provided, including 10 to 20 weight percent of a thermoplastic elastomer, preferably a chlorinated polyethylene, 10 to 20 weight percent of a thermoplastic that is a chlorine-based plastic, less than 15 weight percent of a modifier that imparts predetermined mechanical properties to the film, and 20 weight percent or less of a nondiffusing plasticizer, less than 40 wt % of a filler and 20 wt % or less of a flame-inhibiting material.

This disclosure relates generally to corrugated pipe, and more particularly to corrugated pipe with an outer wrap. In one embodiment, a pipe includes an axially extended bore defined by a corrugated outer wall having axially adjacent, outwardly-extending corrugation crests, separated by corrugation valleys. The pipe also includes an outer wrap applied to the outer wall. The outer wrap may include fibers and plastic. The outer wrap may span the corrugation crests producing a smooth outer surface.