Engineering & Construction Guide

United Pipeline Systems developed the Tite Liner® System in 1985. Since then, over 10,000 km (6,000 mi.) of pipelines have been lined. Tite Liner ranges in diameter from 50mm to 1219mm (2” to 48”). The Tite Liner System begins with a polyethylene liner pipe with an outside diameter larger than the inside diameter of the steel pipe it will protect. The steel pipeline will be cut into sections that allow for the insertion of the liner pipe. Depending on diameter, bends, terrain, and condition of the steel, the maximum section length will be up to 1600m (5,000ft.). A wireline cable is sent through a section of pipeline and then attached to the liner pipe. The wireline pulls the liner pipe through the Roller Reduction Box, which is positioned at the insertion end of the pipeline section. The liner pipe is compressed radially as it passes through the Roller Reduction Box. This temporary reduction provides sufficient clearance between the steel pipe and the liner pipe to allow insertion. Until the pulling is complete, the liner is under ten-sion, causing it to remain at a reduced diameter. When the tension is released, the liner pipe expands, creating a tight fit against the inner wall of the steel pipe. Following relaxation of the liner pipe, the polyethylene flange-fittings are attached and the line is ready for bolt-up and testing.

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