ISO2531 Standard Plastic Coated Elbow Fittings with PN10/16/25 Pressure and DN50/100/150/200/250 Size

Plastic Coated Elbow Fittings Used In Water Supply Drainage Chemical Industry​

Plastic Coated Elbow Fittings Product description

   Plastic-coated pipe fittings, including plastic-coated elbows and flanges, are made by applying a plastic coating to metal pipes (such as cast iron and carbon steel). They combine the strength of metal with the corrosion resistance of plastic. They are widely used in piping systems in fields such as water supply and drainage, and in the chemical industry. They can be used to change the route of pipes and connect different pipes. They effectively prevent corrosion from the conveying medium (such as water and corrosive liquids), extend the service life of the pipes, and facilitate installation and maintenance.

Plastic Coated Elbow Fittings Advantages 

1,Strong Corrosion Resistance

Resistant to Chemical Attack: Ordinary metal pipes are easily corroded by acids, alkalis, and salts in the transported media. For example, when transporting acidic wastewater, iron pipes can experience chemical reactions, leading to wall thinning and perforation. However, the plastic coating (such as polyethylene or epoxy resin) on plastic-coated pipe fittings effectively isolates the metal from the corrosive media. For example, when transporting corrosive liquids in chemical production, plastic-coated pipe fittings maintain their structural integrity for extended periods, extending their service life.

Resistant to Water and Soil Corrosion: In water supply and drainage and buried pipe systems, metal pipe fittings are susceptible to corrosion from electrolytes in water and soil. For example, buried cast iron pipes can experience severe corrosion after just a few years. The coating on plastic-coated pipe fittings blocks contact between water and electrolytes, significantly reducing the risk of corrosion and lowering maintenance costs when used in buried pipes.

2,Excellent Hygienic Performance

Ensuring Drinking Water Safety: For drinking water transportation, plastic-coated pipe fittings utilize food-grade coating materials (such as sanitary-grade polyethylene) that are non-toxic and odorless, releasing no harmful substances into the water and meeting drinking water hygiene standards. Compared to ordinary metal pipes (such as rust-prone iron pipes, which can increase iron content in the water and affect taste), these pipes better ensure drinking water safety and quality.

Reducing Microbial Growth: The smooth plastic coating surface resists the accumulation of dirt and microorganisms, reducing the likelihood of bacteria and algae growing on the pipe's inner wall, maintaining the cleanliness of the conveyed medium within the pipeline. This offers significant advantages for material conveying pipelines in the food and beverage industry.

3,Excellent Mechanical Properties

Both strength and toughness: Plastic-coated pipe fittings, based on metal pipes, retain the high strength of metal and can withstand high pressures. For example, plastic-coated steel pipes can be used in high-pressure fire water supply systems. The plastic coating also imparts a degree of toughness, making the pipes less susceptible to breakage from external shock or vibration, thereby improving their impact resistance.

Excellent wear resistance: When conveying media containing solid particles (such as slurry and muddy water), the plastic coating of plastic-coated pipe fittings effectively reduces abrasion caused by particles on the pipe wall, resulting in a longer wear life than ordinary metal pipe fittings and reducing the frequency of pipe replacement due to wear.

4,Easy Installation and Maintenance

Easy Installation: Plastic-coated pipe fittings offer a variety of connection methods, including threaded, flanged, and grooved connections, similar to those used with ordinary metal pipe fittings. These connections are easy for installers to master, requiring no special tools or complex processes. This improves installation efficiency and shortens construction cycles.

Low Maintenance Cost: Due to their excellent corrosion and wear resistance, plastic-coated pipe fittings are less susceptible to damage and blockage during use, reducing maintenance and repair workload and costs. Furthermore, their smooth interior reduces resistance to fluid flow and reduces energy consumption.

5,Wide Range of Applications

Wide Temperature Adaptability: Plastic-coated pipe fittings with different coating materials can adapt to different temperature environments. For example, some high-temperature-resistant plastic-coated pipe fittings can be used to transport high-temperature media such as hot water and steam, while low-temperature-resistant plastic-coated pipe fittings are suitable for transporting low-temperature liquids, such as liquefied natural gas pipelines.

Multiple Media Compatibility: Whether transporting water, oil, gas, or corrosive media such as acids and alkalis, plastic-coated pipe fittings with the appropriate coating can meet your needs. They are widely used in various industries, including water supply and drainage, petrochemicals, power generation, mining, and construction.

Applications of Plastic-Coated Pipe Fittings

Building Water Supply and Drainage: Drinking Water Systems and Drainage and Sewage Systems

Fire Protection Engineering: Fire Water Supply Systems

Industrial: Petrochemical and Power Industries

Municipal Engineering: Urban Water Supply Pipelines and Trenchless Pipeline Projects

Mining: Mine Water Supply and Drainage Systems and Tailings Pipelines

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