What are the advantages of coated composite pipes?
Release time:
2022-07-19
Plastic-coated composite pipes are products consisting of an inner and outer coating made of PE (modified polyethylene) hot-dip plastic or EP (epoxy resin), offering excellent corrosion resistance. At the same time, the coating itself possesses good electrical insulation properties and does not cause galvanic corrosion. They also exhibit low water absorption.
Plastic-coated composite pipe This product features an inner and outer coating made of PE (modified polyethylene) hot-dip plastic or EP (epoxy resin), offering excellent corrosion resistance. At the same time, the coating itself boasts superior electrical insulation properties and does not cause galvanic corrosion. It also exhibits a low water absorption rate.
The coated composite pipe boasts high mechanical strength, a low coefficient of friction, and long-term durability. It can also effectively prevent damage to plant root systems and mitigate stress on the soil environment. It is convenient for both connection and maintenance. The length of the pipe segment specimen for the coated composite pipe is (500 ± 50) mm. Using appropriate measures, seal both the inlet and outlet of the pipe, gradually increase the negative pressure at the inlet to 660 mmHg, and maintain this pressure for 1 minute. After the test, inspect the inner coating; the test results must comply with the requirements specified in 5.10. High-temperature test: The length of the specimen in the pipe segment is (100 ± 10) mm. Place the specimen in an incubator, heat it up to (300 ± 5)℃, maintain the temperature for 1 hour, then remove it and allow it to cool naturally to room temperature. After the coated composite pipe test, take out the specimen and inspect the inner coating (the appearance color may become darker). The test results must meet the requirements specified in 5.11. Low-temperature test: The dimensions and length of the specimen in the pipe segment are (100 ± 10) mm. Place the specimen in a low-temperature chamber, cool it down to (-30 ± 2)℃, maintain the temperature for 1 hour, remove it, and then place it in an environment at (20 ± 5)℃ for 4 to 7 hours. The coated composite pipe exhibits excellent corrosion resistance: its inner surface is resistant to rusting; it has superior anti-scaling performance: the pipe does not accumulate scale and is less prone to microbial growth; and it offers a long service life.
Plastic-coated composite pipes have a long service life—typically 50 years—and feature a low coefficient of friction; their flow rate increases as the flow volume rises. Provided that they meet fire protection design requirements, black iron pipes can be internally coated with plastic and externally coated with anti-rust paint to reduce costs. Their wide range of applications has become an established fact, making them widely used in key areas such as cable conduit protection, fire-fighting water supply and drainage, chilled water circulation for central air conditioning, industrial anti-corrosion pipelines, oil and gas transportation, and sewage dredging pipelines. They are among the products with the best cost-performance ratio and comprehensive performance available today in modern building piping materials. With the booming real estate industry nationwide and substantial government investment in major national projects, construction projects across the country are in full swing. Under these circumstances, various new types of plastic pipes, stainless steel pipes, and composite pipes have rapidly developed and become common choices for piping systems. However, different types of plastic-coated composite pipes exhibit varying degrees of defects depending on the specific application and location. Nevertheless, in many cases, plastic-coated steel pipes prove to be more competitive—especially epoxy-resin-coated composite pipes, both internally and externally. Whether used in water supply and drainage systems or fire sprinkler systems, whether in HVAC hot- and cold-water circulation systems, or in underground coal mines where flammable and explosive conditions prevail, plastic-coated composite pipes, thanks to their food-grade epoxy resin powder coating, fully meet the needs of water supply systems and comply with national standards for drinking water and related water quality requirements.
Having introduced the above content, I’m sure everyone now has a better understanding of the advantages of coated composite pipes. That’s all for today’s session—stay tuned for even more exciting insights in the next episode!
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