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Steel-lined PTFE pipe

钢衬四氟管道

Steel-lined PTFE pipe

Wear-Resistant Piping / PTFE-lined series

Steel-lined PTFE pipe

钢衬四氟管道

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Product Description

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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