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EN10217-7 1.4301 Extruded Finned Tubes With AL Fin: High-Efficiency Heat Transfer for Wood Dryers

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EN10217-7 1.4301 Extruded Finned Tubes With AL Fin: High-Efficiency Heat Transfer for Wood Dryers

Brand Name : Yuhong

Model Number : EN10217-7 1.4301, Extruded

Certification : ABS, BV, DNV, CCS, LR

Place of Origin : China

MOQ : 100 KGS

Price : Negotiable

Payment Terms : TT, LC

Supply Ability : 4150 Ton Per Month

Delivery Time : 20-80 days

Packaging Details : Plywooden case with Iron Frame

Product name : Extruded Finned Tube

Tube Material Grade : TP304, 316L, 321, SA179, T5, T9, T11, T12, T22

Material : Carbon Steel, Stainless Steel, Alloy Steel

Application : Heat Exchangers, Air Coolers, Condensers, Evaporators, Radiators

Fin material : Aluminum, Cooper

Fin Spacing : 2.0mm-20mm

Fin Thickness : ~0.4mm

Tube Diameter : 15mm, 19mm, 25mm, 32mm, 38mm, 42mm

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EN10217-7 1.4301 Extruded Finned Tubes With AL Fin For Wood Dryer

1. Material & Chemical Composition

  • Base Tube: EN10217-7 1.4301 (AISI 304) stainless steel, chosen for its excellent corrosion resistance and temperature stability—critical for wood dryer environments with high humidity and occasional chemical exposure.
  • Fins: High-purity aluminum (1050/3003 series), selected for superior thermal conductivity to enhance heat transfer efficiency.

Chemical composition of 1.4301 stainless steel (per EN10217-7):

Element Content Range Role in Performance
Chromium (Cr) 18.0-20.0% Provides corrosion resistance
Nickel (Ni) 8.0-11.0% Enhances ductility and oxidation resistance
Carbon (C) ≤0.07% Controls strength and weldability
Manganese (Mn) ≤2.0% Improves formability
Silicon (Si) ≤1.0% Aids in oxidation resistance
Phosphorus (P) ≤0.045% Minimized to avoid brittleness
Sulfur (S) ≤0.015% Reduced to enhance corrosion resistance

2. Mechanical Properties

Engineered for the cyclic thermal stress of wood dryers, these tubes deliver robust mechanical performance:

Property Value Benefit for Wood Dryers
Tensile Strength ≥520 MPa Resists deformation under pressure
Yield Strength ≥205 MPa Maintains shape during thermal cycling
Elongation (in 50mm) ≥40% Accommodates expansion from heat
Maximum Operating Temp 600°C (1112°F) Withstands high heat in dryer chambers

3. Processing Technology

Our extruded finned tubes use a precision cold extrusion process:

  1. Base Tube Preparation: 1.4301 stainless steel tubes are cleaned and precision-machined to ensure uniform outer diameter.
  2. Fin Extrusion: Aluminum fins are mechanically extruded onto the base tube using specialized dies, creating a seamless bond with <0.01mm gap—minimizing thermal resistance.
  3. Surface Treatment: Fins are deburred and tubes undergo passivation to enhance 1.4301’s natural corrosion resistance.
  4. Quality Testing: 100% inspection for fin adhesion, dimensional accuracy, and pressure resistance (tested at 2.5x working pressure).

4. Performance & Application Scenarios

  • Heat Transfer Efficiency: The extrusion process ensures 99%+ contact between fins and base tube, boosting heat transfer by 35-45% compared to wrapped fins—critical for uniform wood drying (reducing drying time by 15-20% in tests).
  • Ideal for Wood Dryers: Specifically designed for:
    • Lumber dryers (hardwood/softwood)
    • Plywood/particleboard drying lines
    • Biomass-fueled or electric wood drying systems
    • Resists moisture, sap residues, and mild acids from wood.

5. Product Advantages

Superior Corrosion Resistance: 1.4301 stainless steel withstands humidity and wood-derived acids, eliminating rust issues common with carbon steel.
Uniform Heat Distribution: Extruded fins ensure consistent heat transfer across the tube surface, preventing uneven wood drying (e.g., warping, cracking).
Longevity: Aluminum fins resist oxidation; stainless steel base tube avoids pitting—service life ≥12 years in typical wood dryer operations.
Energy Efficiency: Reduced thermal resistance lowers energy consumption, cutting operational costs.

6. FAQ

Q1: Can fin density be customized for different wood types?
A: Yes—we offer fin densities (fins per inch: 8-16) tailored to hardwood (slower drying) vs. softwood (faster drying) requirements.

Q2: Are these tubes compatible with high-humidity dryer environments?
A: Absolutely. 1.4301 stainless steel’s chromium content forms a protective oxide layer, resisting moisture-induced corrosion.

Q3: What tube sizes are available?
A: Standard outer diameters: 16mm-51mm; wall thickness: 1.5mm-3mm. Custom sizes available upon request.

7. About Yuhong Holding Group Co., Ltd

With 20 years of export expertise, Yuhong ranks among China’s top 5 finned tube exporters, serving 80+ countries. Our 55 production lines, 110+ skilled workers, and 20,000㎡ facility—equipped with advanced extrusion and testing equipment—ensure compliance with global standards (EN, ASTM, DIN). We specialize in finned tubes, boiler tubes, and heat exchanger solutions, prioritizing quality, on-time delivery, and 24/7 technical support.

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EN10217-7 1.4301 Extruded Finned Tubes With AL Fin: High-Efficiency Heat Transfer for Wood Dryers


Product Tags:

EN10217-7 extruded finned tubes

      

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