Plastic pipes must be protected from prolonged exposure to sunlight. Unlike traditional metal or cast iron pipes, plastic materials have limited resistance to ultraviolet (UV) radiation, which can cause them to degrade and age over time when exposed directly to the sun. To ensure the long-term performance and safety of plastic piping systems, it is essential to implement proper protective measures during design, installation, and final inspection. These techniques help extend the service life of the pipeline and prevent potential failures. Traditional pipes typically do not require such precautions.
To address this issue effectively, the technical approach should prioritize natural compensation, followed by fixed brackets, then another round of natural compensation and a compensator. It's crucial that the fixed brackets maintain full surface contact with the pipe rather than just a line contact, ensuring stability and preventing unnecessary stress.
The connection methods used for plastic pipelines also enhance system safety. In addition to traditional techniques like threaded or flanged connections, new methods such as hot fusion, electrofusion, snap ring, and push-fit connections have been developed. These modern approaches provide better sealing, durability, and ease of installation.
Hot melt welding, in particular, significantly improves the integrity and flexibility of both indoor and outdoor plastic pipelines. This method creates a seamless joint that can withstand external forces and deformation. Historical earthquake damage assessments, such as those from the Haicheng and Tangshan earthquakes in China, showed that traditional cast iron water supply pipes often failed at their joints, with 95% of fractures occurring at these points. Plastic pipes, on the other hand, demonstrated superior resilience and greatly improved the overall safety of the piping systems.
Additionally, the development of new pipe fittings has changed the way we think about plumbing design. As plastic pipes become more widely used, specialized fittings such as water dividers have emerged. These fittings eliminate the need for extra intermediate components and allow the plastic piping system to operate with minimal resistance loss. This not only improves efficiency but also makes full use of the inherent advantages of plastic pipes, such as their lightweight, corrosion resistance, and ease of installation.
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