EN10217-7 1.4310 Extruded Finned Tubes for Heat Exchangers
Our EN10217-7 1.4310 Extruded Finned Tubes are engineered for demanding heat transfer applications requiring superior corrosion resistance, mechanical strength, and long service life. Manufactured using precision extrusion technology, these finned tubes provide an integral mechanical bond between the fin sleeve and the base tube, ensuring excellent thermal conductivity and outstanding structural integrity under continuous operation.
EN10217-7 Grade 1.4310 is an austenitic stainless steel (equivalent to AISI 301) offering high tensile strength, excellent cold workability, and very good corrosion resistance. Combined with extruded fin technology, this material is widely used in air-cooled heat exchangers, economizers, waste heat recovery systems, condensers, radiators, and petrochemical cooling equipment.
Every finned tube is manufactured under strict quality control procedures to ensure consistent fin geometry, reliable heat transfer efficiency, and long-term operational stability.
Features
- Excellent heat transfer performance
- Strong mechanical bond between fin and tube
- Outstanding resistance to atmospheric and industrial corrosion
- High mechanical strength after cold working
- Excellent vibration resistance
- Long operating service life
- Suitable for high-temperature industrial applications
- Low maintenance requirements
- Uniform fin spacing for optimized airflow
- Manufactured according to customer specifications
Typical Applications
EN10217-7 1.4310 extruded finned tubes are extensively used in:
- Shell & Tube Heat Exchangers
- Power Plant Heat Recovery Systems
- Economizers
- Waste Heat Recovery Units
- Petrochemical Processing Plants
- Chemical Processing Equipment
- Oil & Gas Refineries
- HVAC Heat Recovery Systems
- Marine Cooling Equipment
- Industrial Dry Coolers
- Process Cooling Systems
Manufacturing Process
Extruded finned tubes are produced by mechanically extruding an outer aluminum tube over the stainless steel base tube. During extrusion, the aluminum sleeve is plastically deformed into continuous fins while tightly gripping the base tube, creating an excellent mechanical interface for efficient heat transfer.
This manufacturing method provides:
- High fin density
- Excellent fin strength
- Superior resistance to fin loosening
- Enhanced thermal performance
- Excellent weather resistance
Standard Dimensions
| Item | Typical Range |
|---|
| Base Tube OD | 15.88 mm – 63.5 mm |
| Base Tube Wall Thickness | 1.2 – 6.0 mm |
| Tube Length | Up to 18,000 mm |
| Fin Height | 8 – 16 mm |
| Fin Thickness | 0.3 – 0.5 mm |
| Fin Pitch | 2.0 – 12 FPI (approximately 2.1–12.7 mm pitch) |
| Bare End Length | As specified |
| Fin Material | Aluminum 1050 / 1060 / 1100 |
| Base Tube Material | EN10217-7 1.4310 Stainless Steel |
Custom dimensions are available according to project requirements.
Chemical Composition of EN10217-7 1.4310
| Element | Content (%) |
|---|
| Carbon (C) | ≤0.15 |
| Silicon (Si) | ≤2.00 |
| Manganese (Mn) | ≤2.00 |
| Phosphorus (P) | ≤0.045 |
| Sulfur (S) | ≤0.015 |
| Chromium (Cr) | 16.0–19.0 |
| Nickel (Ni) | 6.0–9.5 |
| Nitrogen (N) | ≤0.11 |
Chemical composition complies with EN10217-7 material requirements.
Mechanical Properties
| Property | Typical Value |
|---|
| Tensile Strength | ≥520 MPa |
| Yield Strength (0.2%) | ≥210 MPa |
| Elongation | ≥40% |
| Hardness | ≤230 HB (typical condition) |
| Modulus of Elasticity | Approximately 193 GPa |
Mechanical properties may vary depending on manufacturing condition and heat treatment.
Inspection & Testing
Every production batch can undergo comprehensive inspection to ensure product quality and dimensional accuracy.
Typical testing includes:
- Raw material identification (PMI)
- Chemical composition analysis
- Mechanical property testing
- Hydrostatic pressure testing
- Pneumatic leak testing
- Eddy Current Testing (ECT)
- Ultrasonic Testing (UT)
- Fin bond integrity inspection
- Fin dimensional measurement
- Outside diameter and wall thickness inspection
- Straightness inspection
- Surface quality examination
- Visual inspection
- Length verification
- Packing inspection
Inspection documentation may include:
- EN 10204 3.1 Material Test Certificate
- Dimensional Inspection Report
- Mechanical Test Report
- Chemical Analysis Report
- NDT Report
- Pressure Test Report
Advantages of EN10217-7 1.4310 Extruded Finned Tubes
The combination of EN10217-7 1.4310 stainless steel and extruded fin construction offers numerous operational advantages:
- High thermal efficiency
- Excellent corrosion resistance in industrial environments
- High structural strength
- Reduced maintenance costs
- Longer equipment service life
- Reliable performance under cyclic temperatures
- Excellent resistance to vibration and thermal expansion
- Improved energy efficiency
- Lower operating costs
Packaging
Products are securely packed to prevent transportation damage.
Available packing options include:
- Wooden Cases
- Plywood Cases
- Steel Frames
- Plastic End Caps
- Moisture-proof Wrapping
- Export Seaworthy Packaging
- Customized Packaging upon Request
Why Choose Our Extruded Finned Tubes?
With advanced manufacturing equipment, strict quality assurance, and extensive experience in finned tube production, we deliver heat exchanger components that meet international quality standards. Every extruded finned tube is manufactured for maximum thermal efficiency, precise dimensions, and dependable performance in demanding industrial environments.
Whether for new heat exchanger fabrication or replacement projects, our EN10217-7 1.4310 extruded finned tubes provide a reliable solution for long-term heat transfer perfo
