Pressure pipes can have different types of damages and defects, due different causes occurred in all product value chain; from industrial pipe production until the installation and end of their working life. Since microstructural defects as tiny holes due air and bad gelation in the manufacturing process, passing by the incorrect packaging and wrong secure cargo in transportation, installation and manipulation bad practices, to their usage with non-projected hydrostatic pressures due non satisfactory net design or usage.

Bearing in mind the problem of global warming affecting the planet due to the greenhouse effect, many governments are planning environmental policies seeking greener and environmentally friendly solutions to apply in all areas and so maintain a proper sustainable development of the available resources.

PVC-O gathers a series of characteristics that make this material optimal for pipe manufacturing and, as we will see, pipes made of this material present extreme advantages and savings for pipe manufacturers, as well as large benefits for potential pipe customers and end users.

Among the characteristics of PVC-O we find:

Unbeatable impact resistance

Molecularly Oriented PVC is the result of reorganizing the amorphous structure of PVC-U into a layered structured, by a mechanical process, to provide unbeatable mechanical properties in a plastic pipe, such as: high impact resistance (almost unbreakable), high stiffness and fatigue resistance, excellent behaviour with external loads, elimination of crack propagation and

The durability of PVC-O pipes is not negatively affected by weather changes or by extreme low temperatures. What is more, PVC-O pipes have performed well in extreme climates being, regarding installation and use, fully operational. What is more, PVC-O pipes characteristics become more advantageous as temperature decreases and it has been demonstrated, by a research from the National Research Council of Canada, that buried PVC pipes used for the conveyance of water perfectly accommodate the stress created by water freezing.