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The extensively patented Swagelining process inserts a tight-fitting pipe or thin-walled liner inside a new or existing pipeline. This rehabilitates existing pipelines or protects new lines from internal corrosion and abrasion. Over 1 million meters of oilfield, water, process and gas pressure pipes have been protected with Swagelining.
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Swagelining uses PE pipe with an outside diameter just larger
than the inside diameter of the pipe to be lined. Sections of PE pipe are
butt-fused together to form a continuous pipe just longer than the host
pipe. The PE pipe is pulled through a reduction die to temporarily reduce
its diameter. This allows the PE pipe to be pulled through the host
pipeline.
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liner has been pulled completely through the host pipe, the pulling force is
removed allowing the PE pipe to return toward its original diameter until it
presses tightly against the inside wall of the host pipe. The tight-fitting
PE liner results in a flow capacity close to the original pipeline design
and the wall thickness of the liner pipe remains virtually unchanged
throughout the whole process.
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