ASTM A249 TP304 L-Type Wound Finned Tube With Al1060 For HVAC Systems

1. What is ASTM A249 TP304 L-Type Wound Finned Tube with Al1060?

The ASTM A249 TP304 L-Type Wound Finned Tube is a high-performance heat transfer component engineered for corrosive and high-vibration environments. It consists of a welded austenitic stainless steel base tube (ASTM A249 TP304, 18–20% Cr, 8–10.5% Ni) spirally wound with Aluminum 1060 fin strips (99.6% Al) using an L-foot mechanical locking process. The "L-Type" design features fin roots extruded into precision grooves on the tube surface under high pressure, creating a seamless, gap-free bond that eliminates thermal resistance and prevents fin loosening. This hybrid structure combines TP304’s chloride resistance with Al1060’s ultra-high thermal conductivity (235 W/m·K), ensuring reliability in aggressive media.

2. Chemical & Mechanical Properties

Chemical Properties

Mechanical Properties

3. Key Applications

·Chemical Processing: Sulfuric acid coolers, chlorine condensers, and solvent reactors.

·Food & Beverage: CIP-compliant pasteurizers and fermentation tanks (FDA/3-A certified).

·Power Plants: Flue gas heat recovery boilers and economizers.

·Marine Systems: Seawater-cooled condensers and desalination units.

·HVAC/R: Industrial chillers and heat pumps for humid environments.

4. Why Choose This L-Type Finned Tube?
·15% Higher Heat Transfer vs. standard spiral fin tubes.
·Zero Fin Lift-Off: L-foot locking ensures permanent bonding.
·40% Lighter than solid fin designs, reducing structural costs.
·Certified Quality: ASTM A249, ASME SA-249, ISO 9001, and PED 2014/68/EU.
·20-Year Service Life in saltwater/acid vapor environments.

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.