Stainless Steel 317L Fin Tubes, 317 Stainless Steel Fin Tube Manufacturer, SS 317 Fin Tube Supplier, SS 317 Fin Tube Exporter, Stainless Steel 317 Precision Tubing, SS 317 Small Diameter Tube ,SS 317 Fin Tubes
Stainless Steel 317L Fin Tubes are specialized heat exchanger components designed for enhanced thermal performance and corrosion resistance. These tubes are made from SS 317L, a low-carbon, molybdenum-bearing austenitic stainless steel known for its excellent resistance to chemical attack, particularly in acidic and chloride-rich environments. The addition of extended surface area, or "fins," improves heat transfer efficiency, making these tubes ideal for demanding thermal applications where both strength and resistance to corrosion are required.
The low carbon content of 317L significantly improves its weldability and reduces the risk of sensitization during welding and high-temperature exposure. This feature makes it suitable for critical applications in industries such as chemical processing, petrochemicals, power generation, and marine environments. SS 317L also offers superior creep and stress-to-rupture strength compared to standard stainless steels like 304 or 316, allowing it to perform well in high-pressure and high-temperature conditions.
Fin tubes increase the surface area exposed to the medium, which boosts the efficiency of heat transfer without increasing the size of the equipment. In 317L fin tubes, the fins are typically either extruded or welded onto the base tube, depending on the application's temperature and mechanical requirements. These configurations make them highly suitable for use in air-cooled heat exchangers, condensers, economizers, and oil coolers, where maximizing surface area is essential.
Another key advantage of Stainless Steel 317L fin tubes is their resistance to pitting and crevice corrosion, especially in chloride-rich environments. This makes them a preferred choice for coastal and offshore applications, as well as for systems that handle aggressive chemicals such as sulfuric acid or acetic acid. The alloy's performance in both oxidizing and reducing conditions enhances its versatility across a wide range of industrial settings.
Specification of Stainless Steel 317L Fin Tubes
| Property / Parameter | Specification |
|---|---|
| Material Grade | Stainless Steel 317L (ASTM A213 / A789 / A249) |
| Chemical Composition (%) | C ≤ 0.03, Cr 18-20, Ni 11-14, Mo 3-4, Mn ≤ 2, Si ≤ 1, P ≤ 0.045, S ≤ 0.03 |
| Tube Type | Fin Tubes (Extruded/Welded/Wrap-on fins) |
| Outer Diameter (OD) | Typically 16 mm to 60 mm (custom sizes available) |
| Wall Thickness | 1.5 mm to 5 mm (depending on application) |
| Fin Height | 1.5 mm to 5 mm |
| Fin Pitch | 1 mm to 4 mm |
| Length | Up to 6 meters or customized |
| Mechanical Properties | |
| - Tensile Strength | ≥ 515 MPa |
| - Yield Strength | ≥ 205 MPa |
| - Elongation | ≥ 40% |
| Corrosion Resistance | Excellent resistance to pitting, crevice, and stress corrosion cracking |
| Operating Temperature Range | -196°C to 870°C (depends on application) |
| Surface Finish | Mill finish, polished, or customized |
| Standards | ASTM A213, ASTM A789, ASTM A249, ASME SA213 |
| Applications | Heat exchangers, condensers, petrochemical, chemical processing, marine environments |
In conclusion, Stainless Steel 317L Fin Tubes combine the durability and corrosion resistance of 317L stainless steel with the thermal efficiency of finned tube design. Their structural integrity, high-temperature strength, and corrosion resistance make them an excellent solution for heat transfer systems in harsh operating environments. Whether in chemical plants, refineries, or power stations, these tubes offer long service life and reliable performance under demanding conditions.
Chemical Composition of Stainless Steel 317L Fin Tubes
| Element | Composition (% by weight) |
|---|---|
| Carbon (C) | ≤ 0.030 |
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 11.0 – 15.0 |
| Molybdenum (Mo) | 3.0 – 4.0 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Iron (Fe) | Balance |
| Nitrogen (N) | ≤ 0.10 (if specified) |
With a proven track record as a Stainless Steel 317L Fin Tubes exporter in over 30 countries, Sumer Metal Industries ensures global availability, third-party inspection support, and client-specific customization. Our wide export network combined with strict quality standards has made us a preferred choice for SS 317 tubing worldwide.
Specification of Stainless Steel 317L Fin Tubes
| Property / Parameter | Specification |
|---|---|
| Material Grade | Stainless Steel 317L (ASTM A213 / A789 / A249) |
| Chemical Composition (%) | C ≤ 0.03, Cr 18-20, Ni 11-14, Mo 3-4, Mn ≤ 2, Si ≤ 1, P ≤ 0.045, S ≤ 0.03 |
| Tube Type | Fin Tubes (Extruded/Welded/Wrap-on fins) |
| Outer Diameter (OD) | Typically 16 mm to 60 mm (custom sizes available) |
| Wall Thickness | 1.5 mm to 5 mm (depending on application) |
| Fin Height | 1.5 mm to 5 mm |
| Fin Pitch | 1 mm to 4 mm |
| Length | Up to 6 meters or customized |
| Mechanical Properties | |
| - Tensile Strength | ≥ 515 MPa |
| - Yield Strength | ≥ 205 MPa |
| - Elongation | ≥ 40% |
| Corrosion Resistance | Excellent resistance to pitting, crevice, and stress corrosion cracking |
| Operating Temperature Range | -196°C to 870°C (depends on application) |
| Surface Finish | Mill finish, polished, or customized |
| Standards | ASTM A213, ASTM A789, ASTM A249, ASME SA213 |
| Applications | Heat exchangers, condensers, petrochemical, chemical processing, marine environments |
🏠Industry & Application
- âś… SS 317 Fin Tubes for Medical Industry
- âś… SS 317 Fin Tubes for Chemical Processing
- âś… SS 317 Tubes for Fin Lines
- âś… Stainless Steel 317L Fin Tubes for Gas & Liquid Flow
- âś… SS 317 Tubes for Heat Exchangers
âť“ Frequently Asked Questions (FAQs)
Q1:What are Stainless Steel 317L Fin Tubes?
Stainless Steel 317L Fin Tubes are heat exchanger tubes made from SS 317L—a low-carbon, molybdenum-bearing austenitic stainless steel—equipped with external fins to enhance heat transfer. The fins increase the surface area of the tube, improving its thermal efficiency in heating or cooling applications.
Q2:What makes 317L different from other stainless steels like 304 or 316?
SS 317L contains higher levels of molybdenum than 316, giving it superior resistance to pitting, crevice corrosion, and chemical attack—especially from chlorides and sulfuric acid. It also has a lower carbon content, which enhances weldability and reduces the risk of sensitization.
Q3:Where are SS 317L Fin Tubes commonly used?
These fin tubes are commonly used in: Chemical and petrochemical processing plants Power generation systems Oil refineries Marine and offshore equipment Air-cooled heat exchangers, condensers, and boilers
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At Sumer Metal Industries Pvt. Ltd., we follow a zero-defect policy by implementing stringent quality checks, using certified raw materials, and continuously improving our processes to deliver reliable and consistent tubing solutions
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