Main performance characteristics of PP pipes
2021-08-13
1. Excellent hygiene performance. The pipe material is made from polyolefins, whose molecules consist solely of carbon (C) and hydrogen (H) elements. Both the primary and auxiliary materials fully meet hygiene standards, exhibit superb corrosion resistance, and remain chemically inert toward all ions present in water—ensuring they will not rust or corrode.
2. The pipeline offers low resistance. The inner walls of the straight pipe are smooth, preventing scale buildup. Lead pipes have lower frictional resistance compared to metal pipes, and their cross-sectional area remains unchanged even when connected with pipe fittings—resulting in a lower local resistance coefficient than that of metal pipes.
3. Waste materials from pipes and fittings are recyclable. After being cleaned and shredded, these materials can be directly reused in the production of new pipes and fittings—processes that generate no environmental pollution during manufacturing or installation. They qualify as eco-friendly building materials.
4. Heat preservation and energy conservation. PP pipes The material has a thermal conductivity of 0.21 W/(m·K), which is just 1/200th that of steel pipe. Under normal conditions, insulation is required—particularly when used for hot-water pipelines—to achieve significant energy-saving benefits. Additionally, the expansion forces generated during temperature fluctuations are minimal, making it ideal for direct burial within wall cavities and floor surface layers.
5. PP pipes Shortcomings: a) They have poorer rigidity and impact resistance compared to metal pipes, making them prone to damage during storage, transportation, and installation. b) PP pipes The linear expansion coefficient is relatively high, ranging from 0.14 mm/(m·K) to 0.16 mm/(m·K), making it advisable to install the pipes concealed. When installing openly or in non-directly buried concealed layouts, it’s essential to implement technical measures that prevent pipeline expansion and deformation.
6. Better heat resistance and long service life. pp The pipe-grade material can withstand high operating temperatures of up to 95°C, with a long-term use temperature of 70°C under a pressure of 1.0 MPa—perfectly meeting the upper limit for hot water supply applications. Under working pressure conditions of PN 1.0 MPa, the material boasts an impressive service life of over 50 years, while at ambient temperatures, its lifespan can exceed 100 years.
7. Easy to install and highly reliable in connection. The pipes are not only simple to manufacture and require minimal equipment investment, but they’re also lightweight—weighing just 1/9 the weight of steel pipes and 1/10 that of copper pipes, significantly reducing the physical strain on workers during installation. Additionally, since the pipe material is made from a unique raw material, it boasts excellent hot-melt properties, ensuring convenient and dependable installation. Most importantly, the strength of the connection points exceeds that of the pipe material itself, providing superior durability at critical joints.
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