Steel-lined PTFE pipe
钢衬四氟管道

Wear-Resistant Piping / PTFE-lined series
Steel-lined PTFE pipe
钢衬四氟管道
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Product Title and Overview
Steel-lined PTFE piping — a highly corrosion-resistant composite pipe material
A piping solution that combines the structural strength of metal with the exceptional chemical resistance of PTFE.
Steel-lined PTFE piping is a high-performance composite pipe designed for highly corrosive service conditions. It features a steel pipe as the base material with an inner lining of polytetrafluoroethylene (PTFE), combining the mechanical strength of metal with the exceptional chemical resistance of PTFE.
Product Overview
Specifications
| Specification Item | Detailed description |
|---|---|
| Infrastructure | Outer matrix: carbon steel pipe (e.g., 20# steel); Inner lining: polytetrafluoroethylene (PTFE) |
| Core Advantages | ✅ Exceptional corrosion resistance: Resists most strong acids, strong bases, organic solvents, and strong oxidizing agents, including concentrated nitric acid and aqua regia. ✅ Wide temperature resistance range: Typical operating temperature is -60°C to 200/250°C, with some specialized products capable of withstanding up to 250°C. ✅ Excellent pressure and vacuum resistance: Some models can withstand pressures up to 3 MPa, and are suitable for vacuum conditions within a specified temperature range. ✅ High lubricity and non‑stick surface: The inner wall has an extremely low coefficient of friction, resists scaling, and minimizes flow resistance. |
| Mainstream manufacturing process | 1. Integral molded and sintered liner: The liner exhibits excellent structural integrity and superior impermeability, effectively addressing the thermal expansion–contraction mismatch between steel and fluoroplastic. 2. Tight‑lining forming process: The inner liner is tightly bonded to the steel pipe, ensuring it never detaches and providing resistance to negative pressure and vacuum conditions. 3. Isostatic pressing process: 35 MPa high-pressure monolithic forming, resulting in a liner with high density and superior performance, compliant with ASTM F1545 standard. |
| Typical application industries | Chemical industry: process and discharge pipelines for conveying highly corrosive media such as acids, alkalis, and salts. Power‑generation environmental protection projects: process return‑water conveyance, water treatment, and fly‑ash disposal. Metallurgical Mines: Corrosive Media, Ore Slurries, Slag, and Tailings Discharge and Conveyance Pharmaceutical and paper-making industries: High‑cleanliness, corrosion‑resistant material‑handling pipelines |
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