1. PVC-O pipes exhibit wonderful fatigue resistance and long-term hydrostatic performance, with a service life that can extend up to a century.
2. When PVC-O pipes are stretched in the circumferential (hoop) direction, they display a stress-strain curve similar to that of metallic materials, with a tensile strength that can reach twice that of the non-stretched state, allowing them to withstand higher pressures.
3. PVC-O pipes can withstand deformations up to 99.99% of the pipe's internal diameter in the axial direction. When the pipe is subjected to compression, it can quickly return to its original shape, minimizing the risk of damage during construction due to sand, stones, or mechanical compression. Additionally, the outstanding flexibility makes PVC-O pipes highly suitable for the installation of S-shaped pipelines.
4. The layered structure of PVC-O pipes endows the material with strong impact resistance. During storage, transportation, installation, testing, and operation, stresses caused by impacts from external objects such as sand, stones, or machinery are reduced as they pass through each layer until they dissipate, significantly reducing the damage caused by impacts.
5. Even in cold environments as low as -25°C, PVC-O pipes still possess good energy absorption capabilities, which expands the regions where the pipes can be used and extend the construction window for pipelines.
6. The layered wall structure of PVC-O pipes can effectively prevent the propagation of cracks and scratches, ensuring that damage points caused by external factors or inherent defects do not spread. This significantly reduces the risk of slow or rapid cracking of the material, eliminating safety hazards in the pipeline network.
7. Due to their thinner walls and larger internal diameters, PVC-O pipes have lower water hammer wave speeds and lower water hammer pressures. At the same time, the wonderful toughness of PVC-O absorbs the energy of water hammer impacts, protecting the water network and its components, reducing or even eliminating the occurrence of pipe bursts when the water network is opened or closed.