High Frequency Welded Spiral Fin Tube with 38mm Base OD 0.8mm Fin Thickness 12.5mm Fin Height for HRSG Economizer
Product Details
| Base Tube OD: | 38mm | Base Tube Wall Thickness: | 3.0-6.0mm |
|---|---|---|---|
| Fin Thickness: | 0.8mm | Fin Height: | 12.5mm |
| Fin Pitch: | 4-15mm (custom) | Fin Material: | Carbon Steel / Alloy Steel |
| Welding Method: | High Frequency Resistance Welding | Fin Bond Integrity: | 100% Fin-to-tube Metallurgical Bond |
| NDT Testing: | Pull Test, Visual Inspection, Dimensional Check | ||
| Highlight |
Spiral Fin Tube HFW,HRSG Economizer Fin,12.5mm Fin Height |
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Product Description
High Frequency Welded (HFW) Spiral Fin Tubes provide maximum extended surface area for enhanced heat transfer efficiency in heat recovery steam generators (HRSG), waste heat boilers, and industrial economizers. The high-frequency resistance welding process creates a 100% metallurgical bond between the fin strip and the base tube, ensuring reliable heat conduction and mechanical integrity under thermal cycling conditions.
- Metallurgical Bond: HFW process creates a solid-state weld with no filler metal, achieving bond strength exceeding the parent material
- Continuous Spiral Fin: Single continuous fin strip helically wound and simultaneously welded for uniform heat transfer surface
- Custom Fin Geometry: Adjustable fin height (6-25mm), fin thickness (0.8-2.0mm), and fin pitch (4-15mm) to meet specific duty requirements
- Fin Pull-Off Test: Each production lot tested for fin bond integrity per ASME and EN standards
- Bare Ends: Plain tube ends provided for welding into headers per project specifications
| Parameter | Specification |
|---|---|
| Base Tube Material | SA178 Gr.A/Gr.C, SA192, SA210 Gr.A1/Gr.C, SA213 TP304/TP316 |
| Fin Material | CS (ASTM A1008), Alloy Steel (ASTM A240 TP409, TP410) |
| Fin Type | Solid plain fin (serrated fin also available) |
| Fin Bond | 100% continuous metallurgical bond |
| Section Length | Up to 18000mm |
Product Highlights
High frequency welded spiral fin tube with solid fin-to-tube bond for heat recovery steam generator (HRSG) economizers, providing maximum heat transfer surface area.
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