HDPE Lined Steel Pipe

HDPE lined pipes are composite pipelines that combine the mechanical strength of carbon steel or stainless steel with the excellent corrosion resistance and flexibility of HDPE (High-Density Polyethylene). HDPE is a widely used thermoplastic material known for its outstanding chemical stability, abrasion resistance, and impact strength. By lining HDPE inside a steel pipe, HDPE lined pipes provide a cost-effective and reliable solution for conveying corrosive, abrasive, or slurry media. Compared with traditional metal pipes, HDPE lined pipes significantly improve corrosion resistance while maintaining strong structural integrity, making them suitable for a wide range of industrial and environmental applications.

1.Excellent Corrosion Resistance: HDPE exhibits strong resistance to most acids, alkalis, and salt solutions, effectively preventing internal corrosion and extending pipeline service life.

2.Good Temperature Performance: HDPE lined pipes typically operate within a temperature range of –30°C to +80°C, suitable for most industrial liquid transportation requirements.

3.Smooth Inner Surface & Low Friction: The HDPE lining provides a smooth bore that reduces flow resistance, minimizes pressure loss, and prevents scaling and material buildup.

4.High Impact and Abrasion Resistance: HDPE has excellent toughness and wear resistance, making it ideal for transporting slurry, wastewater, and media containing solid particles.

5.Strong Mechanical Support: The steel outer pipe offers high pressure resistance and structural strength, ensuring safe operation under demanding working conditions.

6.Long Service Life & Low Maintenance: The combination of HDPE lining and steel shell reduces corrosion-related failures, lowering maintenance frequency and overall operating costs.

7.Flexible Connection Options: Available with fixed flanges, loose flanges, and other customized connections for easy installation and replacement.

HDPE lined pipes are widely used in industries where corrosion resistance, abrasion resistance, and economic efficiency are required, including:
• Chemical plants for mild to medium corrosive media transfer
• Mining and mineral processing for slurry and tailings transportation
• Power plants for ash slurry and cooling water systems
• Environmental engineering and wastewater treatment projects
• Desalination and water treatment systems
• Metallurgy and coal chemical industries

• Diameter Range: DN25 – DN1200 (customizable upon request)
• Lining Material: HDPE (High-Density Polyethylene)
• Pipe Body: Carbon steel or stainless steel (SS304, SS316L)
• Working Pressure: Typically up to 1.6 MPa (higher pressure designs available upon request)
• Temperature Range: –30°C to +80°C
• Standard Length: 6 meters or customized according to project requirements

HDPE lined pipes offer an optimal balance between corrosion resistance, mechanical strength, and cost efficiency. They are an ideal solution for conveying corrosive or abrasive media in industrial, mining, and environmental applications. With reliable performance, long service life, and easy installation, HDPE lined pipes provide a practical and economical alternative to traditional metal pipelines.