U-LINER® PIPE. THE ADVANCED SOLUTION TO AN AGING PROBLEM.

It's eating away at our underground pipe infrastructure: corrosion, wear andtear and the complex effects of time. Thousands of miles of damaged sewer, waterand gas pipes in the U.S. are in immediate need of repair. It is an issue thathas economic and environmental implications and is quickly surpassing thenation's ability to rectify the problem.

The traditional solution to this problem is the costly task of excavating and replacing the damaged pipe. Fortunately there are new and innovative technologies. One of them is U-Liner®, a proven, leading method of trenchless technology that offers a safe and economical solution to pipeline rehabilitation and renovation.

APIPE WITHIN A PIPE

Made of high density polyethylene (HDPE) U-Liner® is deformed atour manufacturing facility into a "U" shape approximately one-half thediameter of the host pipe. At the installation site, the U-Liner® is pulledthrough the damaged host pipe and then reformed to securely fit the shape of thehost pipe. The end result is a structurally sound "pipe within a pipe"that offers a true "jointless" installation.

TURNKEY PROCESS ENSURES PROPER INSTALLATION

Prior to any installation, U-Liner® Pipe is specially designedand manufactured for your project. Made in continuous lengths, the pipe isdeformed and wound on a reel, or coiled, for easy transport. Once on the jobsite, the damaged host pipe is flushed to remove any blockage or debris. After aclosed circuit TV camera inspects the line, the U-Liner® Pipe is pulled throughan upstream manhole by cable from the downstream manhole. It is then cut forprocessing. A patented heat/pressure method is used to reform the U-Liner® to fitthe shape of the host pipe. Service connections are then restored with a remotecontrolled lateral cutter.

The entire process is accomplished quickly, with little or no disruption to surface activity. Flow is usually restored within a matter of hours, not days, as is usually the case with traditional remove and replace methods. U-Liner® has a design life of 50+ years and should require no costly repairs in its service life.  To see the installation process, click here.

TRENCHLESSTECHNOLOGY HELPS PROTECT THE ENVIRONMENT

Because the U-Liner® Pipe rehabilitation method is a completely trenchlessoperation, the negative environmental impact associated with excavation iseliminated.

With U-Liner® Pipe, It is possible to rehabilitate existing pipelines andprovide indirect environmental benefits at the same time. Air pollution fromdust and gases stirred by excavation is reduced. Nearby cables and utility lineswill not be broken or cut. The contamination of surrounding soil or the presenceof groundwater from corroded, leaking pipe is no longer a problem because of thecorrosion resistant properties of U-Liner® Pipe.

APPROVED FOR NATURAL GAS AND INDUSTRIALPIPELINES

Since U-Liner® Pipe is impervious to the passage of chemicals, gases and liquids, it is the perfect solution to damaged sewer, natural gas and industrial process pipe-lines. With the seamless construction and ductile properties of U-Liner®, leaky joints and structural cracks are virtually eliminated. That adds up to decades of safe operating pipelines and a damage free environment.

A MATERIAL DIFFERENCE IN QUALITY

High density polyethylene (HDPE) has been accepted and used for environmentally sensitive project for over 50 years. It has also been found that the surface smoothness and abrasion resistance of HDPE pipe improve flow capacity and prevent the sticking of grease and other materials to the inner wall of the pipe.

THE U-LINER® ADVANTAGE

• 100% high density polyethylene (HDPE)

• Resistant to chemicals, gases, abrasion and cracking

• Smooth surface improves flow capacity (Hazen Williams of 155, Manning No. of 0.009)

• Seamless construction - no joints to leak

• Meets ASTM material, installation & manufacturing standards
• Environmentally safe, no harmful by-products to leak into water table
• 50+ years design life, 2:1 safety factor
• Structurally sound and designed for direct burial

A RECOGNIZED STANDARD IN THE INDUSTRY

Available in diameters ranging from 4" to 21" the U-Liner® Pipe ismade if high density polyethylene (HDPE -3408) and if required, medium densitypolyethylene (MDPE-2406). U-Liner® also meets all ASTM standards including(F1533-94- and F1606-95) standards and specifications for deformed/reformedpolyethylene liner pipe.

CSR PIPELINE SYSTEMS

CSR Pipeline Systems, located in Houston, Texas, is the manufacturer of U-Liner®.  Their web site may be reached by clicking here.