Datang Factory Provided High Frequency Welded/Welding Stainless Steel Spiral Fin/Finning/Finned Pipe/Tube. Long Service Life: Spiral fin steel pipes offer a service life exceeding 20 years with robust mechanical resistance. High Frequency Welding: Continuous high frequency welding ensures a robust bond, preventing fin loosening and ensuring heat transfer efficiency. Customizable Dimensions: Outer diameter, length, wall thickness, and surface finish are fully customizable to client requirements. Wide Material Selection: Available in Stainless Steel, Carbon Steel, Alloy Steel, Titanium, Copper, Duplex, and Inconel. Excellent Mechanical Resistance: Can be frequently cleaned with high-pressure jets, reducing downtime and extending overall life. Online Cold Bending: Equipped with online single or duplex cold bending equipment for exact end alignment on tubes 31mm to 76mm. Corrosion Protection Options: External surfaces can be treated with protective coatings to enhance corrosion resistance.