Introduction, features, and applicable media of steel-lined PO pipes

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The polyolefin (PO) material used in steel-lined PO pipes is suitable for handling various concentrations of acid, alkali, and salt solutions, as well as certain organic solutions. The operating temperature range for these pipes is from -60°C to +100°C. Its advantage is that it represents one of the most ideal corrosion-resistant materials available today, and it is widely used in large-scale equipment and pipes manufactured by rotational molding. Polyphenylene sulfide (TD-PPS) is suitable for handling inorganic acids, organic acids, salts, alkalis, oxidizers, etc.; its operating temperature range is from -70°C to +150°C. This material boasts excellent heat resistance, flame retardancy, electrical insulation properties, and adhesion strength. In terms of corrosion resistance, it is second only to polytetrafluoroethylene. Containers, towers, tanks, or large pipes made using rotational molding technology with this material perform better than those made with rubber linings, plastic sheets/pipes, fiberglass, or stainless steel. To date, no solvent has been found that can dissolve it at temperatures below 120 degrees; PPS lined with steel is an ideal material for solving corrosion problems in the chlor-alkali industry, serving as a substitute for polytetrafluoroethylene. The steel-lined plastic lining can be made from anti-corrosion materials of different thicknesses, such as fluoroplastics (F46, F4), modified polypropylene (PP), polyethylene (PE), polyolefins (PO), etc. Customers can choose different lining materials depending on the various operating conditions. Operating performance: Liner material, operating temperature, operating pressure. F4: ≤180°C; 0.6 MPa, 1.0 MPa, 1.6 MPa, 2.5 MPa, 4.0 MPa. F46: ≤150°C; PO: ≤100°C; PE: ≤80°C; PP: ≤110°C; PPS: ≤150°C℃