Introduction
Longitudinal Finned Tubes are high-efficiency heat exchange tubes welded from carbon steel/stainless steel tubes with longitudinal fins, used in boilers, chemical plants, and waste heat recovery systems.
Products Advantages
Higher Heat Exchange Efficiency
Longitudinal fins increase the heat-receiving area by 2.5–4 times, and the all-welded structure reduces thermal resistance, resulting in faster heat transfer.
Strong High Temperature Resistance
Materials such as A179, A106, and 304/316 can withstand temperatures of 450–800°C. The Cr/Ni composition enhances oxidation resistance and extends service life.
Robust Structure with No Delamination
High-frequency welding/argon arc welding achieves continuous welds with high tensile strength, extending service life by 25–40% compared to mechanically clad designs.
Manufacturing Process
Finals are tightly welded to the main tube using high-frequency welding/argon arc welding, ensuring strength and heat transfer performance.
Production Flow
Main Tube Processing: Cutting, straightening, degreasing → Ensures welding quality
Fin Forming: Cutting to width → Maintains consistent heat transfer area
Automatic Welding: Continuous welding → Stable weld, lower thermal resistance
Straightening and Stress Treatment → Prevents bending, improves durability
Inspection of Each Fin → Ensures batch consistency
Packaging and Transportation
Packaging Method: Apply anti-rust oil + wrap with thin film + secure to steel frame/wooden pallet in bundles to prevent fin deformation and collision.
Transportation Method: Supports sea freight, land freight, and reinforced container transportation to ensure safe and stable delivery of large quantities.
