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.

2. Mechanical Properties

3. Processing Technology

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

6. FAQ

7. About Yuhong Holding Group Co., Ltd

• Email: jimmy@steelseamlesspipe.com
• WhatsApp: +86 18892647377
• Website: www.steelfintube.com

Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories,  the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always.   The factories already got certificates like : ABS, LR, DNV-GL, BV, KR, CCS, ASME, ISO 9001, ISO14001, ISO18001, ect.

Our factories main products as below : 
Factory 1th: Stainless steel seamless tube, Duplex steel seamless tube, Super duplex steel seamless tube, Nickel alloy steel seamless tube;

Factory 2th: Carbon steel seamless tube, Alloy steel seamless tube; Enhanced Heat Tranfer Tube, low fin tube ,U bending workshop;
Factory 3th: High frequency welding fin tube(HFW fin tube, Solid Fin tube, Studded Tube, Serrated Fin tube, Longitudinal welding fin tube), Wound fin tube(L type fin tube, LL type fin tube,  KL type fin tube), Embedded G type fin tube , Extruded fin tube,  low fin tube, U bend & 180deg. Return;

Yuhong Holding Group also has gained rich experience for project package( products contain:Pipes, Fittings, Flanges, heat exchanger, furnace, fired heater, air cooler, boiler) , YUHONG brand has marked its global presence in more than 85 countries, like, Korea, USA, Canada, Mexico, Colombia, Bolivia, Chile, Argentina, Brazil, Ecuador, Austria, New Zealand, Singapore, Malasyia, Indonesia, Thailand, Vietnam, Ukraine, Turkey,Sauid Arabia, Qatar, U.A.E,Israel,India, UK, France, Italy, Gernmany, Poland, Spain,... We have successfully implemented the orders of Cross Country Pipelines for our valuable customers. In addition, we have also developed a huge network of contacts and strategic alliances with most important manufacturers as stockists around the world.